RikoteMaster/aqua-rat-mcqa huggingface dataset:
Question: What is the next number of the following sequence
12, 36, 80, 150,.... ?
A.252
B.262
C.272
D.282
Answer: A.252
Explanation: 12=2^3+2^2
36=3^3+3^2
80=4^3+4^2
150=5^3+5^2
=>6^3+6^2=216+36=252
ANSWER:A
Question: What is the sum of the greatest common factor and the lowest common multiple of 36 and 56?
A.512
B.508
C.451
D.516
Answer: B.508
Explanation: Prime factorization of 36 = 2 x 2 x 3 x 3
Prime factorization of 56 = 2 x 2 x 2 x 7
GCF = 4
LCM = 504
Sum = 508
Ans: B
Question: Three number are in the ratio of 3 : 4 : 5 and their L.C.M. is 2400. Their H.C.F. is:
A.40
B.80
C.120
D.200
Answer: A.40
Explanation: Explanation:
Let the numbers be 3x, 4x and 5x.
Then, their L.C.M. = 60x.
So, 60x = 2400 or x = 40.
The numbers are (3 x 40), (4 x 40) and (5 x 40).
Hence, required H.C.F. = 40. Answer: A
Question: Which greatest possible length can be used to measure exactly 15 meter 75 cm, 11 meter 25 cm and 7
meter 65 cm
A.45cm
B.255cm
C.244cm
D.55cm
Answer: A.45cm
Explanation: Explanation:
Convert first all terms into cm.
i.e. 1575 cm, 1125cm, 765cm.
Now whenever we need to calculate this type of question, we need to find the HCF. HCF of above terms
is 255.
Answer: Option A
Question: The average of 2,7,6 and x is 5 and the average of 18,1,6,x and y is 10. What is the value of y?
A.10
B.20
C.15
D.25
Answer: B.20
Explanation: We have : (2+7+6+x) /4 = 5
15+x = 20
x = 5
(18+1+6+x+y)/5 = 10
25+5+y = 50
y = 20
Answer is B
Question: The sum of the ages of 5 children born at the intervals of 3 years each is 50 years. what is the age of the youngest child ?
A.4
B.8
C.10
D.None of these
Answer: C.10
Explanation: Explanation:
Let x = the youngest child. Each of the other four children will then be x+3, x+6, x+9, x+12.
We know that the sum of their ages is 50 .
so, x+(x+3)+(x+6)+(x+9)+(x+12) = 50
inline Rightarrow x= 4
inline therefore The youngest child is 4 years old. Answer: C
Question: A can do work in 9 days, B can do work in 18 days. In how many days they will complete the work together.
A.8 days
B.7 days
C.6 days
D.5 days
Answer: C.6 days
Explanation: Bigger no=18, Ratio=9:18=1:2
No of days = 18/(1 + 2)
= 6 days
ANSWER:C
Question: The largest five digit number which is a perfect cube, is:
A.85184
B.91125
C.97336
D.96806
Answer: C.97336
Explanation: Explanation:
46*46*46 = 97336
Answer: C
Question: A train running at the speed of 60 km/hr crosses a pole in 9 seconds. Find the length of the train?
A.150 meter
B.170 meter
C.156 meter
D.168 meter
Answer: A.150 meter
Explanation: Speed = 60*(5/18) m/sec
= 50/3 m/sec
Length of Train (Distance)
= Speed * Time
(50/3) * 9
= 150 meter
Answer:A
Question: If A lends Rs.3500 to B at 10% per annum and B lends the same sum to C at 11% per annum then the gain of B in a period of 3 years is?
A.110
B.106
C.105
D.107
Answer: C.105
Explanation: (3500*1*3)/100 => 105
Answer: C
Question: In a rectangular coordinate system, what is the area of a rhombus whose vertices have the coordinates (0, 3.5), (12, 0), (0, -3.5), (-12, 0)?
A.84
B.88
C.112
D.116
Answer: A.84
Explanation: Area of rhombus= 1/2* D1 *D2
Length of 1st diagonal = 12+12= 24
Length of 2nd diagonal= 3.5+3.5= 7
Area= 1/2*24*7= 84
A is the answer
Question: In an election, candidate Smith won 52% of the total vote in Counties A and D. He won 61% of the vote in County A. If the ratio of people who voted in County A to County D is 3:1, what percent of the vote did candidate Smith win in County D ?
A.A.25%
B.B.27%
C.C.34%
D.D.43%
Answer: A.A.25%
Explanation: (61%)*3x + (y%)*x = (52%)*4x
y = 25% of County D
hence answer is A.
Question: Two pipes can fill a tank in 24 min and 32 min respectively. If both the pipes are opened simultaneously, after how much time B should be closed so that the tank is full in 18 min ?
A.4 min
B.6 min
C.9 min
D.8 min
Answer: D.8 min
Explanation: Pipe A will run for 18 minutes
Sp pipe A will do = 18/24 = 3/4 portion of the work
left work is 1/ 4
Just assume that what will be 1/4 if multiplied with 1/32 (B's rate )
Only 8 will make it 1/4
So after 8 minutes B should be stopped
Answer : D
Question: A father said to his son, "I was as old as you are at the present at the time of your birth". If the father's age is 38 years now, the son's age five years back was:
A.14 years
B.19 years
C.24 years
D.33 years
Answer: A.14 years
Explanation: Let the son's present age be x years. Then, (38 - x) = x
2x = 38.
x = 19.
Son's age 5 years back (19 - 5) = 14 years.
Answer: Option A
Question: A local restaurant recently renovated its dining space, purchasing new tables and chairs to use in addition to the original tables and chairs. The new tables each seat six customers, while the original tables each seat four customers. Altogether, the restaurant now has 40 tables and is capable of seating 212 customers. How many more new tables than original tables does the restaurant have?
A.8
B.12
C.20
D.24
Answer: B.12
Explanation: If all the tables seated 4, the number of customers could be 4*40 = 160.
212-160 = 52, so 52/2 = 26 tables must be tables seating 6 people.
The number of tables seating 4 people is 40-26 = 14.
The number of new tables is 26-14 = 12 more than the number of old tables.
The answer is B.
Question: A 1200 m long train crosses a tree in 120 sec, how much time will I take to pass a platform 700 m long?
A.176 Sec
B.190 Sec
C.178 Sec
D.267 Sec
Answer: B.190 Sec
Explanation: L = S*T
S= 1200/120
S= 10 m/Sec.
Total length (D)= 1900 m
T = D/S
T = 1900/10
T = 190 Sec
Answer:B
Question: One filter decreases the concentration of harmful substances in water by half. If water that contains less than 0.1 percent of harmful substances is considered clean, how many filters are required to clean 200 liters of water containing 0.5 liters of harmful substances ?
A.2
B.3
C.5
D.6
Answer: A.2
Explanation: Initially, the concentration of harmful substances in the water is 0.5/200∗100%=0.25%. One filter will reduce this concentration to 0.125%. Two filters will reduce the concentration to 0.0625% which is less than 0.1%
Answer: A
Question: The function f is defined for all positive integers m by the following rule. f(m) is the number of positive integers each of which is less than m and has no positive factor in common with m other than 1. If p is any prime, number then f(p)=
A.p-1
B.p-2
C.(p+1)/2
D.(p-1)/2
Answer: A.p-1
Explanation: If not the wording the question wouldn't be as tough as it is now. The GMAT often hides some simple concept in complicated way of delivering it.
This question for instance basically asks: how many positive integers are less than given prime number p which have no common factor with p except 1.
Well as p is a prime, all positive numbers less than p have no common factors with p (except common factor 1). So there would be p-1 such numbers (as we are looking number of integers less than p).
For example: if p=8 how many numbers are less than 8 having no common factors with 8: 1, 2, 3, 4, 5, 6, 7 --> 8-1=7.
Answer: A.
Question: If X is 30% greater than Y, Z is 25% smaller than how much percent is X greater than Z?
A.25%
B.73 1/3%
C.73%
D.74%
Answer: B.73 1/3%
Explanation: Explanation:
X = 130
Y = 100
Z = 75
X-Z/Z * 100 = 55/75 * 100 = 5500/75 % = 73 1/3% greater than Z
Answer: Option B
Question: What is the smallest integer w greater than 1 that leaves a remainder of 1 when divided by any of the integers 6, 8, and 10?
A.21
B.41
C.w=121
D.241
Answer: C.w=121
Explanation: Or u can just use the answer choices here. Since the answers are already arranged in ascending order, the first number which gives remainder w as 1 for all three is the correct answer. In the given question, the first number which gives a remainder of 1 for 6,8 and 10 is 121.C
Question: Ravi can do a piece of work in 30 days while Prakash can do it in 40 days. In how many days will they finish it together?
A.17 1/7
B.17 1/5
C.17 1/8
D.17 1/1
Answer: A.17 1/7
Explanation: 1/30 + 1/40 = 7/120
120/7 = 17 1/7 days
Answer: A
Question: If 0 < x < 7 and 0 < y < 9, then the lowest possible value for xy is
A.between 60 and 70
B.between 0 and 60
C.0
D.between 0 and -70
Answer: B.between 0 and 60
Explanation: If 0 < x < 7 and 0 < y < 9, then the lowest possible value for xy is
A. between 60 and 70
B. between 0 and 60
C. 0
D. between 0 and -70
E. less than -70
Say y = 8 (y<9)
x = 6
So xy =48 which is less than 60.
Answer is B
Question: A school has received 60% of the amount it needs for a new building by receiving a donation of $400 each from people already solicited. People already solicited represent 40% of the people from whom the school will solicit donations. How much average contribution is requited from the remaining targeted people to complete the fund raising exercise?
A.$200
B.$177.78
C.$100
D.$277.78
Answer: B.$177.78
Explanation: Let us suppose there are 100 people. 40% of them donated $16000 ( 400 * 40 )
$16000 is 60% of total amount.
So total amount = 16000 * 100/60
Remaining amount is 40% of total amount.
40% of total amount = 16000 * (100/60) * (40/100) = 32000/3
This amount has to be divided by 60 ( remaining people are 60 )
So per head amount is 32000/3 / 60 = 32000/180 = 1600/9 = $177.78;
ANSWER:B
Question: A certain game pays players in tokens, each of which is worth either m points or n points, where m and n are different positive integers whose greatest common factor is 1. In terms of m and n, what is the greatest possible sum, in points, that can be paid out with only one unique combination of these tokens? (For example, if m = 2 and n = 3, then a sum of 5 points can be created using only one combination, m + n, which is a unique combination. By contrast, a sum of 11 points can be created by 4m + n or by m + 3n. This solution does not represent a unique combination; two combinations are possible.)
A.2mn
B.2mn – m – n
C.2mn – m – n – 1
D.mn + m + n – 1
Answer: B.2mn – m – n
Explanation: Multiple combinations are created when you can “exchange” a set of m tokens worth n points each for a set of n tokens worth m points each. In the example given in the problem, the first solution uses 4 m’s (worth 8 points total) and one n (worth 3 points) to reach 11 points. The second solution is created when 3 m’s (worth 2 points each, for a total of 6 points) are exchanged for 2 n’s (worth 3 points each, for a total of 6 points), leading to the new solution m + 3n.
The question asks for a sum with a unique solution, or a solution for which such an “exchange” is not possible. What must be true of this kind of solution?
The payout may include no more than (n – 1) m-point tokens. (If there were n of them, they could be exchanged to make a different combination.)
The payout may include no more than (m – 1) n-point tokens. (If there were m of them, they could be exchanged to make a different combination.)
The question asks for the greatest possible such sum, so use the maximum possible number of m and n tokens, as determined above:
(n – 1)(m) + (m – 1)(n)
= mn – m + mn – n
= 2mn – m – n.
Alternatively, try plugging in numbers. For instance, if m = 2 and n = 3, then you’re looking for the greatest possible sum that can be paid with a unique combination of 2- and 3-point tokens. That sum must be one of the answer choices, so check the sums in the answer choices and stop at the highest one with a unique payout combination.
With m = 2 and n = 3, the answer choices are (A) 12 points, (B) 7 points, (C) 6 points, (D) 10 points, (E) 1 point. Try them in decreasing order (because the problem asks for the greatest sum):
(A) A sum of 12 points can be paid out in three ways: six 2-point tokens; three 2-point tokens and two 3-point tokens; and four 3-point tokens. This answer is not correct.
(D) A sum of 10 points can be paid out in two ways: five 2-point tokens, or two 2-point tokens and two 3-point tokens. This answer is not correct.
(B) A sum of 7 points can be paid out only as two 2-point tokens and one 3-point token. This answer is the largest one left with a unique combination, so it is the correct answer.
The correct answer is (B)
Question: In how many different number of ways 5 men and 4 women can sit on a shopa which can accommodate persons?
A.2051
B.3024
C.2058
D.3020
Answer: B.3024
Explanation: 9p4 =9 x 8 x 7 x 6 = 3024
B)
Question: Among the members of the Malmo family, there are three times as many members who do not wear glasses as members who do. Half of the Malmo family members have blue eyes, and 4/5 of the family members who have blue eyes do not wear glasses. What percent of the Malmo family members wear glasses and do not have blue eyes?
A.10
B.15
C.20
D.25
Answer: B.15
Explanation: Number in black are given and in red are calculated.
Now, since x+3x=100, then x=25 and therefore =25−10=15
Answer: B.
Question: A fish tank contains orange fish and silver fish. After k more orange fish and 2k more silver fish are added, the probability of choosing an orange fish at random is 1313 . What was the probability of choosing a silver fish before any more fish were added?
A.1/4
B.1/3
C.1/2
D.2/3
Answer: D.2/3
Explanation: Equation (1): o+k=1xo+k=1x
Equation (2): s+2k=2xs+2k=2x
Multiplying the first Equation by 2: 2o+2k=2x2o+2k=2x. Let´s call this last equation, Equation (3): 2o+2k=2x2o+2k=2x
We can subtract Eq (3) −− Eq (2): 2o−s=02o−s=0, and then s=2os=2o.
Then, s/s+o=2o/3o=2/3
The correct answer is letter (D).
Question: A can do 1/4th part of the work in 10 days, B can do 40% of the work in 40 days and C can do 1/3rd of the work in 13 days. Who will complete the work first?
A.A
B.B
C.C
D.A and C both
Answer: C.C
Explanation: Explanation:
The whole work is done by A in 4 × 10 = 40 days
B can do the whole work in 40/40 × 100 days = 100 days
C can do the whole work in 3 × 13 = 39 days.
Therefore, the 1st person to complete the work is C.
Answer: Option C
Question: Find the length of the wire required to go 15 times round a square field containing 69696 m^2.
A.1250
B.2489
C.6398
D.15840
Answer: D.15840
Explanation: Explanation:
a2 = 69696 => a = 264
4a = 1056
1056 * 15 = 15840
Answer: D
Question: Roses can be purchased individually for $5.30, one dozen for $36, or two dozen for $50. What is the greatest number of roses that can be purchased for $680?
A. 156
B. 162
C. 317
D. 324
Answer: C. 317
Explanation: Buy as many $50 deals as possible. We can by 650/50=13 two dozen roses, thus total of 13*24 = 312 roses.
We are left with 680 - 650 = $30. We can buy 30/5.3 = ~5 roses for that amount.
Total = 312 + 5 = 317.
Answer: C.
Question: If x dollars is invested at 10 percent for one year and y dollars is invested at 8 percent for one year, the annual income from the 10 percent investment will exceed the annual income from the 8 percent investment by $65. If $2,000 is the total amount invested, how much is invested at 8 percent?
A.$550
B.$650
C.$750
D.$850
Answer: C.$750
Explanation: 0.1x = 0.08(2000-x)+65
0.18x = 225
x = 1250
Then the amount invested at 8% is $2000 - $1250 = $750
The answer is C.
Question: 62 small identical cubes are used to form a large cube. How many more cubes are needed to add one top layer of small cube all over the surface of the large cube ?
A.64
B.128
C.152
D.154
Answer: D.154
Explanation: 62 small cube will make a large cube with 4 cubes in each line i.e.
Adding one layer will require one cube at each end and hence new cube will have 6 cubes in each line.
Total number of small cubes in new cube = 6^3 = 216
Extra cube required = 216 - 62 = 154
Hence, D is the answer.
Question: If a book is sold at 9% profit instead of 9% loss, it would have brought Rs 9 more. Find out the cost price of the book
A.75
B.72
C.50
D.70
Answer: C.50
Explanation: Let C.P. of the book be Rs. ’X’
Given, 1.09 X - 0.91X = 9
=> 0.18 X = 9 = 9/0.18 = Rs 50
ANSWER:C
Question: Divide $600 among C,D in the ratio 9:6. How many $ that D get?
A.$44
B.$40
C.$36
D.$32
Answer: B.$40
Explanation: Sum of ratio terms = 9+6 = 15
D = 600*6/15 = $40
Answer is B
Question: What are the number of ways to select 3 men and 2 women such that one man and one woman are always selected?
A.20
B.30
C.40
D.45
Answer: B.30
Explanation: The number of ways to select three men and two women such that one man and one woman are always selected = Number of ways selecting two men and one woman from men and five women
= ⁴C₂ * ⁵C₁ = (4 * 3)/(2 * 1) * 5
= 30 ways.
B
Question: Set A consists of all the prime numbers between 10 and 25. What is the range of set A?
A.12
B.13
C.16.6
D.17
Answer: A.12
Explanation: The range of a set of data is the difference between the highest and lowest values in the set
In this set,
Highest number = 23
Lowest number = 11
Range = Highest - Lowest = 23 - 11 = 12
Option A
Question: In a race of 300 m A beats B by 15 m and C by 9 m. In a race of 450 m C will beat B by
A.381 m
B.429 m
C.441 m
D.439 m
Answer: C.441 m
Explanation: A:B=300:285 (Bcoz A beats b by 15 m)
B:C=300:291 (Bcoz A beats C by 9 m)
C:B=291:285 (It means C beats by B 6 m in race of 291m)
then C beats by B in race of 450 m = (6/291)*450=9m
so, 450-9=441m
ANSWER:C
Question: The average of 10numbers is 60. Out of 10numbers the average of first 6no. is 68, and last 6numbers is 75 then find 7th number?
A.A)78
B.B)65
C.C)258
D.D)62
Answer: C.C)258
Explanation: 7th number = sum of 1st 6no.s + sum of last 6no.s - sum of 11no.s
answer = 6*68+6*75-10*60 = 258
Answer is C
Question: A painter intends to mixed two jars of paint to create a new color. He chooses one paint jar randomly from a display containing 2 red and 2 blue samples, and a second jar is chosen at random from a different display containing 4 red and 2 blue samples. If he plans on mixing the two chosen jars together, what is the probability that when mixed together, the result will be purple paint? (The color purple is created with 1 part red and 1 part blue.)
A.1/5
B.1/2
C.2/3
D.4/5
Answer: D.4/5
Explanation: Painter has two buckets he has to randomly pick from 2 different lists ... Let these Lists be A and B ... He has to choose the first bucket from List A , and the second bucket from List B
FOR THE FIRST BUCKET ...
Red color - 2
Blue color - 2
FOR THE SECOND BUCKET
Red color - 3
Blue color -2
In order to get Purple he has to mix red with blue .. Both the LISTS contain either blue or red , therefore we have two scenarios :
Scenario I - He picks Red color from List A and Blue color from List B
Scenario II - He picks Blue color from List A and Red color from List B
Scenario I - Odds for red color from List A are 1/2 .. and for Blue color from List B are 2 /5 .. Multiplying them (because we have to find the odds that both colors are selected from their respective lists together (this is a AND not an OR problem) we get 1/5
Scenario II - Odds for blue color from List A are 1/2 , and for Red color from List B are 3/5 ... Multiplying them we get 3/10 ...
Both the scenarios are equally possible therefore we must ADD the two (not multiply ) because both of them do not have to hold true together (have to independently) for our desired result to be achieved ...
We get 1/5 + 3/10 = 4/5(D)
Question: A ship 450 m long is running at a speed of 24 km/hr. In what time will it pass a bridge 900 m long?
A.202.5sec
B.205.5 sec
C.200 sec
D.1350 sec
Answer: A.202.5sec
Explanation: total length= 450+900=1350
speed=24 km/h=(24*5)/18= 20/3 m/s
time=(1350*3)/20=202.5 sec.
ANSWER:A
Question: which one is odd?
4377
3954
9860
8454
9831
A.4377
B.3954
C.9860
D.8454
Answer: C.9860
Explanation: Correct Answer : C
sum of digit of all other number is 21, but sum of digit of 9860 is 23
Question: Evaluate 2.5 / .0005
A.5000
B.500
C.50000
D.50
Answer: A.5000
Explanation: Explanation:
2.5 * 10000 / 5 = 25000/5 = 5000
Option A
Question: Rodrick mixes a martini that has a volume of 'n' ounces having 40% Vermouth and 60% Gin by volume. He wants to change it so that the martini is 25% Vermouth by volume. How many ounces of Gin must he add?
A.n/6
B.n/3
C.3n/5
D.5n/6
Answer: C.3n/5
Explanation: Note that after we add pure Gin, the volume of Vermouth will remain the same. Based on this set the equation:
0.4n=0.25(n+g) --> g=3n/5
Answer: C.
Question: A certain city with a population of 192,000 is to be divided into 11 voting districts , and no district is to have a population that is more than 10 percent greater than the population of any other district What is the minimum possible population that the least populated district could have ?
A.a) 10,700
B.b) 16,000
C.c) 10,900
D.d) 11,000
Answer: B.b) 16,000
Explanation: Let x = number of people in smallest district
x*1.1 = number of people in largest district
x will be minimised when the number of people in largest district is maximised
10*x*1.1 = 11x = total number of people in other districts
So we have 11x + x = 192k
x = 16,000
Answer : B
Question: A certain bus driver is paid a regular rate of $16 per hour for any number of hours that does not exceed 40 hours per week. For any overtime hours worked in excess of 40 hours per week, the bus driver is paid a rate that is 75% higher than his regular rate. If last week the bus driver earned $1116 in total compensation, how many total hours did he work that week?
A.36
B.57
C.44
D.48
Answer: B.57
Explanation: For 40 hrs = 40*16=640
Excess = 1116-640=476
For extra hours =.75(16)=12+16=28
Number of extra hrs =476/28=17
Total hrs =40+17=57
Answer B 57
Question: A dog chases a cat 3 hours after the cat runs. dog takes 6 hours to reach the cat. If the average speed of the dog is 72 kmph, what s the average speed of the cat?
A.48kmph
B.47kmph
C.46kmph
D.38kmph
Answer: A.48kmph
Explanation: cat take 9 hours and dog take 6 hours...then Distance chased by them is 72*6.so speed of cat is (72*6)/9=48kmph.
ANSWER IS A
Question: In one hour, a boat goes 11 km along the stream and 5 km against the stream. The speed of the boat in still water in ( km/hr) is
A.3
B.5
C.8
D.9
Answer: C.8
Explanation: Solution
Speed in still water	= 1/2(11+5) km/hr
= 8 km/hr.
Answer C
Question: The H.C.F. of two numbers is 25 and the other two factors of their L.C.M. are 14 and 16. The larger of the two numbers is
A.276
B.299
C.312
D.400
Answer: D.400
Explanation: Solution
Clearly, the numbers are (25 x 14) and (25 x 16).
Larger number = (25 x 16)	= 400.
Answer D
Question: Evaluate:57- 12*3*2 =?
A.42
B.49
C.62
D.72
Answer: B.49
Explanation: According to order of operations, 12?3?2 (division and multiplication) is done first from left to right
12**2 = 4* 2 = 8
Hence
57 - 12*3*2 = 57- 8 = 49
correct answer B
Question: The length of a rectangle is two - fifths of the radius of a circle. The radius of the circle is equal to the side of the square, whose area is 1225 sq.units. What is the area (in sq.units) of the rectangle if the rectangle if the breadth is 6 units?
A.140
B.84
C.88
D.72
Answer: B.84
Explanation: Given that the area of the square = 1225 sq.units
=> Side of square = √1225 = 35 units
The radius of the circle = side of the square = 35 units Length of the rectangle = 2/5 * 35 = 14 units
Given that breadth = 6 units
Area of the rectangle = lb = 14 * 6 = 84 sq.units
Answer: B
Question: In a certain math department, students are required to enroll in either Calculus or Trigonometry, each of which is offered in beginner and advanced courses. The number of students enrolled in Trigonometry is 50% greater than the number of students enrolled in Calculus, and 70% of Calculus students are enrolled in the beginner course. If 4/5 of students are in the beginner courses, and one student is selected at random, what is the probability that a beginner Trigonometry student is selected?
A.40%
B.44%
C.48%
D.52%
Answer: D.52%
Explanation: Let x be the number of students in calculus.
Then the number of students in trigonometry is 1.5x
The number of students on beginner calculus is 0.7x
The number of students in beginner trigonometry is 4/5*(2.5x) - 0.7x = 1.3x
The percentage in beginner trigonometry is 1.3x / 2.5x = 52%
The answer is D.
Question: In how many ways 5 Indians and 2 Englishmen can be seated in a row so that they are alternate?
A.240
B.96
C.144
D.202
Answer: A.240
Explanation: number of ways = 5!*2! = 240
Answer is A
Question: f a person walks at 14 km/hr instead of 10 km/hr, he would have walked 20 km more. The actual distance travelled by him is:
A.5 km
B.50 km
C.10 km
D.25 km
Answer: B.50 km
Explanation: Explanation:
Let the actual distance travelled be x km.
Then, x/10=x+20/14
14x = 10x + 200
4x = 200
x = 50 km.
ANSWER:B