RikoteMaster/aqua-rat-mcqa huggingface dataset:
Question: Two men are going along a track rail in the opposite direction. One goods train crossed the first person in 20 sec. After 10 min the train crossed the other person who is coming in opposite direction in 18 sec .After the train has passed, when the two persons will meet?
A.70 minutes
B.80 minutes
C.85 minutes
D.90 minutes
Answer: D.90 minutes
Explanation: Let us consider that speed of train , first man and second man are respectively t, f and s.
According to first given condition goods train crossed the first person moving in same direction in 20 sec.
so length of the will be 20(t-f)
similarly train crossed the second man in 18 sec.
so length of the train will be 18(t+s)
on comparing these two equations, we get 20(t-f) = 18(t+s)
or 2t = 20f + 18s
or t = 10f + 9s
now it is given that After 10 min the train crossed the other person who is coming in opposite direction so
if we consider this way of train as L then the next equation will be
L = 600t (here 600 is used for 10 minutes)
finally as asked in the question the time required to meet the two man after the train has passed will be given by
time = (L-600 f)/(f+s) {here 600f is used for the distance traveled by first man in 10 minutes}
= (600t-600f)/(f+s)
= [600(10f+9s)-600f]/(f+s)
= 600(10f+9s-f)/(f+s) = 600*9(f+s)/(f+s) = 600*9 seconds = 600*9/60 min
= 90 minutes
ANSWER:D
Question: If Ramola ranks 14th in a class of 26, what is her rank from the last?
A.11th
B.13th
C.12th
D.14th
Answer: B.13th
Explanation: when considered from last, 12 (i.e 26-14) students are ranked before her. so she is 13th rank from last.
ANSWER:B
Question: In a box, there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither blue nor green?
A.2/3
B.8/21
C.3/7
D.9/22
Answer: B.8/21
Explanation: Explanation:
Total number of balls = (8 + 7 + 6) = 21
Let E = event that the ball drawn is neither blue nor green =e vent that the ball drawn is red.
Therefore, n(E) = 8.
P(E) = 8/21.
Answer: Option B
Question: In a contest, a bowl contains 18 keys, only one of which will open a treasure chest. If a contestant selects the key that opens the treasure chest, she wins the contents of that chest. If Anna is allowed to draw two keys, simultaneously and at random, from the bowl as the first contestant, what is the probability that she wins the prize?
A.1/18
B.1/9
C.5/36
D.1/4
Answer: B.1/9
Explanation: P(not winning) = 17/18*16/17 = 8/9
P(winning) = 1 - 8/9 = 1/9
The answer is B.
Question: A 600 meter long train crosses a signal post in 40 seconds. How long will it take to cross a 7.2 kilometer long bridge, at the same speed?
A.4 min
B.2 min
C.8 min
D.9 min
Answer: C.8 min
Explanation: S = 600/40 = 15 mps
S =7200/15 =480 sec =8 min.Answer:C
Question: A wholesaler wishes to sell 100 pounds of mixed nuts at $2.50 a pound. She mixes peanuts worth $1.50 a pound with cashews worth $5.00 a pound. How many pounds of cashews must she use?
A.40
B.45
C.50
D.55
Answer: B.45
Explanation: From the question stem we know that we need a mixture of 100 pounds of peanuts and cashews. If we represent peanuts as x and cashews as y, we get x + y = 100. Since the wholesaler wants to sell the mixture of 100 pounds @ $2.50, we can write this as: $2.5 * (x + y) = $1.5x + $4y
From the equation x + y = 100, we can rewrite y as y = 100 - x and substitute this into our equation to get:
$2.5 * (x + 100 - x) = $1.5x + $4(100 - x)
If you solve for x, you will get x = 60, and therefore y = 40. So the wholesaler must use 40 pounds of cashews.
You can substitute into the original equation to see that: $250 = $1.5(60) + $4(40)
Answer is B
Question: The speed of a car increases by 2 kms after every one hour. If the distance travelling in the first one hour was 50 kms. what was the total distance traveled in 12 hours?
A.252 kms
B.152 kms
C.732 kms
D.752 kms
Answer: C.732 kms
Explanation: Explanation:
Total distance travelled in 12 hours =(50+52+54+.....upto 12 terms)
This is an A.P with first term, a=50, number of terms,
n= 12,d=2.
Required distance = 12/2[2 x 50+{12-1) x 2]
=6(122)
= 732 kms.
Answer: C
Question: workers decided to raise Rs.3 lacs by equal contribution from each. Had they contributed Rs.50 eachextra, the contribution would have been Rs.3.15 lacs . How many workers were they?
A.300
B.230
C.500
D.560
Answer: A.300
Explanation: N * 50 = (315000 - 300000) = 15000
N = 15000 / 50
= 300
A
Question: Joe’s average (arithmetic mean) test score across 4 equally weighted tests was 60. He was allowed to drop his lowest score. After doing so, his average test score improved to 65. What is the lowest test score that was dropped?
A.20
B.25
C.45
D.65
Answer: C.45
Explanation: The arithmetic mean of 4 equally weighted tests was 60. So what we can assume is that we have 4 test scores, each 60.
He dropped his lowest score and the avg went to 65. This means that the lowest score was not 60 and other three scores had given the lowest score 5 each to make it up to 60 too. When the lowest score was removed, the other 3 scores got their 5 back. So the lowest score was 3 *5 = 15 less than 60.
So the lowest score = 60 - 15 = 45
Answer (C)
Question: Dhoni bought a 1-year, $40,000 certificate of deposit that paid interest at an annual rate of 6 percent compounded semiannually. What was the total amount of interest paid on this certificate at maturity?
A.$2456
B.$2436
C.$2446
D.$2466
Answer: B.$2436
Explanation: 6 percent compounded semiannually --> 3% in 6 moths.
For the first 6 moths interest was 3% of $40,000, so $1200
For the next 6 moths interest was 3% of $41,200, so $1236
Total interest for 1 year was $1200+$1236=$2436
Answer : B
Question: A and B finish the job in 15 days.while A,B and C can finish it in 12 days . C alone will finish the job in
A.40 days
B.30 days
C.60 days
D.70 days
Answer: C.60 days
Explanation: Explanation:
12 = (15 * x)/(15 + x)
180+12x=15x
3x=180
X=60
Answer: Option C
Question: 10 women can complete a work in 7 days and 10 children take 14 days to complete the work. How many days will 5 women and 10 children take to complete the work?
A.6 days
B.7 days
C.8 days
D.9 days
Answer: B.7 days
Explanation: Explanation:
1 woman's 1 day's work = 1/70
1 Child's 1 day's work = 1/140
5 Women and 10 children 1 day work =
(5/70+10/140)=1/7
So 5 women and 10 children will finish the work in 7 days
Option B
Question: Adding two non multiples of R always results in a multiple of R; which of the following must be the value of R ?
A.[A] two
B.[B] three
C.[C] five
D.[D] ten
Answer: A.[A] two
Explanation: NON- multiples of 2 would always be ODD and sum of two odd would be EVEN.
so irrespective of value of non-multiples, sum of two them would always be even and thus multiple of 2..
A
Question: Ashish and Rahul started walking from same point E. Ashish walked at the speed of 15 kmph to the east, and Rahul walked 25 kmph to south, at what time they meet 10 miles apart?
A.15 min
B.16 min
C.17 min
D.18 min
Answer: D.18 min
Explanation: Consider 1 mile = 1.6 km
so 10 miles = 16 km
both are walking in at an angle 90 from same point so pythagorous theorem can be apply hence
(15x)^2 + (25x)^2 = 16^2
by solving and x hours are converted into min we got
approximate 18 min
ANSWER:D
Question: Find the fourth proportional to 0.2,0.12 and 0.3?
A.0.18
B.0.21
C.0.22
D.0.34
Answer: A.0.18
Explanation: Formula = Fourth propotional = (b × c)/a
A = 0.2 , B = 0.12 and C = 0.3
(0.12 × 0.3)/0.2
0.036/0.2 = 0.18
A
Question: Bottle R contains 100 capsules and costs $6.30. Bottle T contains 130 capsules and costs $2.99. What is the difference between the cost per capsule for bottle R and the cost per capsule for bottle T?
A. $0.04
B. $0.12
C. $0.05
D. $0.03
Answer: A. $0.04
Explanation: Cost per capsule in R is 6.30/100=0.063
Cost per capsule in T is 2.99/130=0.023
The difference is 0.004
The answer is A
Question: Using all the letters of the word "NOKA", how many words can be formed, which begin with N and end with A?
A.8
B.2
C.9
D.3
Answer: B.2
Explanation: There are five letters in the given word.
Consider 4 blanks ....
The first blank and last blank must be filled with N and A all the remaining three blanks can be filled with the remaining 3 letters in 2! ways.
The number of words = 2! = 2.
Answer:B
Question: The average age of 20 men in the class is 15.6 years. Five new men join and the new average becomes 16.56 years. What was the average age of five new men?
A.15.5
B.15.4
C.15.25
D.20.4
Answer: D.20.4
Explanation: Total age of 20 men = 15.6 x 20 = 312
Now, total age of 25 men = 141.
Total age of five men added later = 414 - 312 = 202.
Hence, the total average of five men = 102/5 = 20.4
ANSWER:D
Question: If f(1, 1) = 5 and f(1, 5) = 26, what is the value of f(1, 10)?
A.107
B.101
C.147
D.None of these
Answer: B.101
Explanation: Solution:
The function f(a, b) = a3 + b2
f(1, 2) therefore is = 1^3 + 2^2 = 1 + 4 = 5 and
f(1, 5) = 1^3 + 5^2 = 1 + 25 = 26
Therefore, f(1, 10) = 1^3 + 10^2 = 1 + 100 = 101
Answer B
Question: In a survey about potential presidential candidates A and B, 30% of the public likes A and 50% liked B.If the percentage of the public who like one candidate only is twice the percentage of the public who like both candidates, then what is the percentage of the public that liked neither.
A.70%
B.55%
C.60%
D.65%
Answer: A.70%
Explanation: T=100
A=30
B=50
Both=x
A only=30-x
B only=50-x
N=Neither
Given:
A only+B only=2*Both
30-x+50-x=2x
80=4x
x=20
T=A only+B only+Both+Neither
100=30-20+20-20+20+N
100=30+N
N=100-30=70
Ans:A
Question: A, B, C and D enter into partnership. A subscribes 1/3 of the capital B 1/4, C 1/5 and D the rest. How much share did A get in a profit of Rs.2460?
A.14299
B.27888
C.26687
D.14000
Answer: D.14000
Explanation: 25*12: 30*12: 35*8
15:18:14
14/47 * 47000 = 14000 .Answer: D
Question: The no of revolutions a wheel of diameter 40cm makes in traveling a distance of 176m is
A.338
B.140
C.287
D.277
Answer: B.140
Explanation: Explanation:
distance covered in 1 revolution = {\color{Blue} 2\Pi r} = 2 *(22/7) *20 = 880/7 cm
required no of revolutions = 17600 *(7/880) = 140
Answer: B) 140
Question: The length of a rectangle is twice its breadth. If its length is decreased by 5 cm and breadth is increased by 5 cm, the area of the rectangle is increased by 65 sq. cm. Find the length of the rectangle.
A.12cm
B.14cm
C.16cm
D.18cm
Answer: C.16cm
Explanation: Explanation:
Let breadth = x. Then, length = 2x. Then,
(2x - 5) (x + 5) - 2x * x = 65 => 5x - 25 = 65 => x = 16.
Length of the rectangle = 16 cm.
Answer: Option C
Question: Suppose you want to buy three loaves of bread that cost $1.00 each
and a jar of peanut butter that costs $5. A jar of jelly is $2.75, but you
donâ€™t need any jelly. You have $16. How much money will you have left
over?
A.$1.50
B.$6
C.$8
D.$7
Answer: C.$8
Explanation: The jelly is extra information. 16.00 â€“ 3 x 1 â€“ 5.00 =
16.00 â€“ 3 â€“ 5.00 = 8
You have $8 left.
correct answer C
Question: 30% people of a village in Sri Lanka died by bombardment, 25% of the remainder left the village on account of fear. If now the population is reduced to 6695, how much was it in the beginning?
A.7000
B.6700
C.6695
D.7645
Answer: C.6695
Explanation: X * (70/100) * (75/100) = 3515
X = 6695
Answer: C
Question: A’s speed is 17/14 times that of B. If A and B run a race, what part of the length of the race should A give B as a head start, so that the race ends in a dead heat?
A.1/14
B.1/17
C.3/14
D.3/17
Answer: D.3/17
Explanation: Let x be the fraction of the distance that B runs.
Let v be the speed at which B runs.
The time should be the same for both runners.
Time = D / (17v/14) = xD/v
(14/17)*D/v = x*D/v
x = 14/17
B should have a head start of 3/17 of the full distance.
The answer is D.
Question: If 5 machines can produce 20 units in 10 hours, how long would it take 20 machines to produce 200 units?
A.50 hours
B.40 hours
C.25 hours
D.12 hours
Answer: C.25 hours
Explanation: Here, we're told that 5 machines can produce 20 units in 10 hours....
That means that EACH machine WORKS for 10 hours apiece. Since there are 5 machines (and we're meant to assume that each machine does the same amount of work), then the 5 machines equally created the 20 units.
20 units/5 machines = 4 units are made by each machine every 10 hours
Now that we know how long it takes each machine to make 4 units, we can break THIS down further if we choose to...
10 hours/4 units = 2.5 hours per unit when 1 machine is working.
The prompt asks us how long would it take 20 machines to produce 200 units.
If 20 machines each work for 2.5 hours, then we'll have 20 units. Since 200 units is '10 times' 20, we need '10 times' more TIME.
(2.5 hours)(10 times) = 25 hours
Final Answer:
[Reveal]Spoiler:
C
Question: Two men can complete a piece of work in four days. Two women can complete the same work in eight days. Four boys can complete the same work in five days. If four men, eight women and 20 boys work together in how many days can the work be completed?
A.1/2 day
B.1/8 day
C.1/3 day
D.8/2 day
Answer: A.1/2 day
Explanation: Two men take four days to complete the work four men would take (2 * 4)/4 = 2 days to complete it.
Similarly four women would take two days to complete it and 20 children would take one day to complete it.
All the three groups working togerther will complete 1/2 + 1/2 + 1/1 work in a day
= 2 times the unit work in a day.
They will take 1/2 a day to complete it working together.
Answer: A
Question: It is known that no more than 100 children will be attending a birthday. What is the smallest number of toffees that must be brought to the party so that each child receives the same number of toffees?
A.15
B.320
C.400
D.150
Answer: C.400
Explanation: The number of children is not specified. We are just given that there are no more than 100 children.
If we assume that number of children is 75 then answer will be D.
If we assume that number of children is 100 then answer will be C because only 400 is divisible by 100.
Question: A sum of money invested at C.I. amounts to Rs. 800 in 3 years to Rs. 840 in 4 years. The rate of interest per annum is?
A.2 1/2 %
B.4%
C.5%
D.6 2/3 %
Answer: C.5%
Explanation: S.I. on Rs. 800 for 1 year = (840 - 800) = Rs. 40 Rate = (100 * 40)/(800 * 1) = 5%
ANSWER:C
Question: A vehicle has an insurance of 4/5 of its original value. Premium on the vehicle at the rate of 1.3% amounts to 910 Rs. What is the original value of the vehicle?
A.87,508
B.87,502
C.87,500
D.87,509
Answer: C.87,500
Explanation: Explanation:
No explanation is available for this question!
ANSWER: C
Question: 15.06 * 0.0000001 = ?
A.15060000
B.0.001506
C.1.506e-06
D.0.1506
Answer: C.1.506e-06
Explanation: Explanation:
Clearly after decimal 9 digits should be there.
Option C
Question: A man saves 20% of his monthly salary. If an account of dearness of things he is to increase his monthly expenses by 20%, he is only able to save Rs. 220 per month. What is his monthly salary?
A.5500
B.2999
C.2878
D.2990
Answer: A.5500
Explanation: Income = Rs. 100
Expenditure = Rs. 80
Savings = Rs. 20
Present Expenditure 80*(20/100) = Rs. 96
Present Savings = 100 â€“ 96 =Rs. 4
100 ------ 4
? --------- 220 => 5500
Answer: A
Question: In how many ways can be 7 boys and 7 girls sit around circular table so that no two boys sit next to each other?
A.(5!)^2
B.(6!)^2
C.6!7!
D.11!
Answer: C.6!7!
Explanation: first fix one boy and place other 6 in alt seats so total ways is 6!
now place each girl between a pair of boys... total ways of seating arrangement of girls 7!
total is 6!*7!
ANS C
Question: The expression x#y denotes the product of the consecutive multiples of 3 between x and y, inclusive. What is the sum of the exponents in the prime factorization of 21#39?
A.17
B.18
C.19
D.20
Answer: D.20
Explanation: First, let's translate the expression 21#39, using the definition given:
21#39 = 21×24×27×30×33×36×39
We need the prime factorization of this product.
Let's factor out 3 from each multiple.
21#39 = 3^7(7×8×9×10×11×12×13)
Now let's replace each consecutive integer with its prime factorization:
21#39 = 3^7(7×2^3×3^2×(2×5)×11×(2^2×3)×13)
Let's group the prime bases:
21#39 = 2^6×3^10×5×7×11×13
The sum of the exponents is 6 + 10 + 1 + 1 + 1 + 1 = 20
The answer is D.
Question: John bought an old Vehicle for $42000. He spent $13000 on repairs and sold it for $64900. What is his profit percent?
A.11%
B.15%
C.18%
D.17%
Answer: C.18%
Explanation: C
18%
Total CP = Rs. 42000 + Rs. 13000 = Rs. 55000 and SP = Rs. 64900
Profit(%) = (64900 - 55000)/55000 * 100 = 18%
Question: If (2x + 1) times (x + 2) is an odd integer, then x must be:
A.an odd integer
B.an even integer
C.a prime number
D.a composite number
Answer: A.an odd integer
Explanation: Solution:
(2x + 1) times (x + 2) means (2x + 1)(x + 2)
(2x + 1)(x + 2) = 2x^2+5x+2
For 2x^2+5x+2 to be odd, 5x+2 must be odd since 2x^2 is always even.
So 5x must be odd, hence x must be odd.
Therefore x is an odd integer.
Answer: A
Question: Anna left for city A from city B at 5.20 a.m. She traveled at the speed of 80 km/hr for 2 hrs 15 min. After that the speed was reduced to 60 km/hr. If the distance between two cities is 350 kms, at what time did Anna reach city A?
A.10.77 a.m
B.10.85 a.m
C.10.27 a.m
D.10.25 a.m
Answer: D.10.25 a.m
Explanation: Distance covered in 2 hrs 15 min i.e., 2 1/4 hrs = 80 * 9/4 = 180 hrs.
Time taken to cover remaining distance = (350 - 180)/60 = 17/6 hrs
= 2 5/6 = 2 hrs 50 min
Total time taken = (2 hrs 15 min + 2 hrs 50 min) = 5 hrs 5 min.
So, Anna reached city A at 10.25 a.m.
Answer:D
Question: How many different positive integers exist between 10^7 and 10^8, the sum of whose digits is equal to 2?
A.6
B.7
C.5
D.8
Answer: D.8
Explanation: So, the numbers should be from 10,000,000 to 100,000,000
The following two cases are possible for the sum of the digits to be 2:
1. Two 1's and the rest are 0's:
10,000,001
10,000,010
10,000,100
10,001,000
10,010,000
10,100,000
11,000,000
7 numbers.
2. One 2 and the rest are 0's:
20,000,000
1 number.
Total = 8 numbers.
Answer: D
Question: 0.0005?=0.01
A.5
B.0.05
C.0.5
D.50
Answer: B.0.05
Explanation: Explanation :
Required Answer = 0.0005/0.01 = 0.05/1 = 0.05. Answer : Option B
Question: A toy store regularly sells all stock at a discount of 20% to 40%. If an additional 25% were deducted from the discount price during a special sale, what would be the lowest possible price of a toy costing $16 before any discount?
A.$5.60
B.$7.20
C.$8.80
D.$9.60
Answer: B.$7.20
Explanation: The lowest price would have to be calculated by finding the price of the $16 product after the initial 40% reduction, then the final price after 25% was taken off of the already-discounted price. So:
A 40% discount on a $16 product would = 60% of the original $16 price: $16 x .60 = $9.6
Next you have to find the price after an additional 25% had been discounted from the $9.6, which would be 75% of the $9.6: $9.6 x .75 = $7.20
The answer is B
Question: 5 cylinders are built successively, the first is 4 meters tall and the following cylinders are each 4 meters taller than the previous. If the perimeter is 10pi m, what is the total surface area of the 5 cylinders, excluding the bases of each cylinder?
A.725pi sq m
B.1025pi sq m
C.600pi sq m
D.125pi sq m
Answer: A.725pi sq m
Explanation: s.a. = h x p + 2 x a
we need to excude the bottom area, so the formula becomes:
s.a. = h x p + a
p = 2 pi x r, so 10 pi = 2 pi x r
r = 5
since we have 5 cylinders with different heights the equation becomes
s.a. = ( 4 + 8 + 12 + 16 + 20 ) x 10pi + 5 x pi x r ^2
60 x 10 pi + 5 pi x 5^2
600 pi + 125 pi = 725 pi sq. m.
Answer is A
Question: The length of a rectangular plot is 10 meters more than its width. If the cost of fencing the plot at $15.50 per meter is $682, what is the length of the plot in meters?
A.10
B.12
C.14
D.16
Answer: D.16
Explanation: perimeter = 2L + 2W = 2L + 2(L-10) = 4L - 20
cost of fencing = (4L - 20) * 15.50 = 62L - 310 = 682
62L = 992
L = 16 meters
The answer is D.
Question: In a particular course, only two grades are given all semester: the midterm exam, which counts for 25% of the semester grade, and the final exam, which counts for the remainder. Lindsey's semester grade was 88%. If the highest possible score on either exam is 100%, what is the lowest possible score P that Lindsey could have received on her midterm exam?
A.52%
B.64%
C.72%
D.76%
Answer: A.52%
Explanation: If the midterm counts for 25% of the total grade, then the final exam must count for the remaining 75%, meaning that in this weighted average problem the final is weighted 3 times as much as the midterm. Using the weighted average mapping strategy, then, and maximizing her final exam score so that you minimize her midterm score, you have:
100-------------88----------------------------x
And you know that the ratio is 3:1. Since the final exam score of 100 is weighted heavier, then the difference of 12 between 100 and 88 is the1part of the ratio, meaning that 3(12) is the 3 portion. That equals 36, so the midterm score (x) is 36 less than the weighted average of 88. 88 - 36 = 52, sothe correct answer is 52%.
Question: If three eighth of a number is 141. What will be the approximately value of 32.08% of this number?
A.90
B.120
C.160
D.60
Answer: B.120
Explanation: x * 3/8 = 141 => x= 376
376 * 32.08/100 = 120
ANSWER:B
Question: A searchlight on top of the watch-tower makes 1 revolutions per minute. What is the probability that a man appearing near the tower will stay in the dark for at least 20 seconds?
A.1/4
B.1/3
C.1/2
D.2/3
Answer: B.1/3
Explanation: 1 revolutions per minute = 1 revolution every 60 seconds
So no matter what anybody appearing at the tower cannot stay in the dark for more than 60 seconds. This will be our total number of possibilities i.e the denominator.
P(man in dark for at least 20 seconds) = 1 - P (man in dark for max of 20 seconds) = 1 - 20/60 = 1 - 1/3 = 2/3
or the other way would be:
P(man in dark for at least 20 seconds) is like saying he can be in dark for 5,6,7...all the way to 60 seconds because that is the max. In this approach it would be 20/60 seconds = 1/3.
Answer is B
Question: 85% of a number is added to 24, the result is the same number. Find the number?
A.330
B.267
C.278
D.160
Answer: D.160
Explanation: (85/100) * X + 24 = X
3X = 480
X = 160
Answer:D
Question: 36 people {a1, a2… a36} meet and shake hands in a circular fashion. In other words, there are totally 36 handshakes involving the pairs, {a1, a2}, {a2, a3}, …, {a35, a36}, {a36, a1}. Then size of the smallest set of people such that the rest have shaken hands with at least one person in the set is
A.76
B.55
C.44
D.12
Answer: D.12
Explanation: Ans: {a1, a2}, {a2, a3},{a3, a4}, {a4, a5},{a5, a6}, {a6, a7} …, {a35, a36}, {a36, a1}
From the above arrangement, If we separate a3, a6, a9, .....a36. Total 12 persons the reamining persons must have shaked hand with atleast one person. So answer is 12.
Answer:D
Question: IF
6= I
7= E
8= I
9= I
10=E
THEN 11=?
A.I
B.J
C.K
D.L
Answer: D.L
Explanation: IF
6= I... Second letter of ONE.
7= E.... Second letter of TWO.
8= I
9= I
10= E
THEN 11=L... Second letter of Eleven
ANSWER:D
Question: We all know that square root of number 121 is 11.
But do you know what si the square root of the number "12345678987654321" ?
A.222222222
B.111111111
C.333333333
D.777777777
Answer: B.111111111
Explanation: B
It's a maths magical square root series as :
Square root of number 121 is 11
Square root of number 12321 is 111
Square root of number 1234321 is 1111
Square root of number 123454321 is 11111
Square root of number 12345654321 is 111111
Square root of number 1234567654321 is 1111111
Square root of number 123456787654321 is 11111111
Square root of number 12345678987654321 is 111111111 (answer)
Question: Joe went on a diet 3 months ago when he weighed 222 pounds. If he now weighs 198 pounds and continues to lose at the same average monthly rate, in approximately how many months will he weigh 170 pounds?
A. 3
B. 3.5
C. 4
D. 4.5
Answer: B. 3.5
Explanation: 222 - 198 = 24 pounds lost in 3 months
24/3 = 8, so Joe is losing weight at a rate of 8 pounds per month.
...in approximately how many months will he weigh 170 pounds?
A simple approach is to just list the weights.
Now: 198 lbs
In 1 month: 190 lbs
In 2 months: 182 lbs
In 3 months: 174 lbs
In 4 months: 166 lbs
Since 170 pounds is halfway between 174 and 166, the correct answer must be 3.5 months.
Answer: B