RikoteMaster/aqua-rat-mcqa huggingface dataset:
Question: In a workshop there are 4 kinds of beds, 3 kinds of closets, 2 kinds of shelves and 4 kinds of chairs. In how many ways can a person decorate his room if he wants to buy in the workshop one shelf, one bed and one of the following: a chair or a closet?
A.168.
B.80.
C.56.
D.48.
Answer: C.56.
Explanation: ways to select one shelf = 2
ways to select one bed = 4
ways to select one of the following: a chair or a closet = 4+3 = 7
ways to select all of them together = 2*4*7 = 56
Hence, C is the answer.
Question: √(9)^2
A.3
B.14
C.9
D.21
Answer: C.9
Explanation: explanation
√(9)^2 =?
or, ? = 9
Answer C
Question: A necklace is made by stringing N individual beads together in the repeating pattern red bead, green bead, white bead, blue bead and yellow bead. If the necklace begins with a red bead and ends with a white bead, then N could be:
A.38
B.77
C.68
D.29
Answer: C.68
Explanation: The pattern is R G W B Y R G W B Y R .......
So, White bead comes at these positions 3rd, 8th, 13th, 18th...
If we take this as a arithmetic progression, then this series can be expressed as 3 + (n - 1) 5. ( From the formula for general term of AP = a + (n-1)d).
This can be expressed as 5n - 2
We check the answer options so only 68 satisfy the condition.
Answer:C
Question: What is the speed of the stream if a canoe rows upstream at 8 km/hr and downstream at 12km/hr
A.1 kmph
B.4 kmph
C.3 kmph
D.2 kmph
Answer: D.2 kmph
Explanation: Sol.
Speed of stream = 1/2(12 -8) kmph = 2 kmph.
Answer D
Question: Two men A and B working together complete a piece of work which it would have taken them
respectively 12 and 18 days to complete if they worked separately. They received Rs.149.25 as
their payment. Find the share of A in the amount they received?
A.Rs. 89.55
B.Rs. 59.70
C.Rs. 85.56
D.Rs. 88.56
Answer: A.Rs. 89.55
Explanation: lcm of 12 and 18 is 36
no of untits of a is 3units
no of units of b is 2 units
then 5-->149.25
3--->?
( 3*149.25)/5
=89.55
ANSWER:A
Question: In the Johnsons' monthly budget, the dollar amounts allocated to household expenses, food, and miscellaneous items are in the ratio 5:2:2, respectively. If the total amount allocated to these three categories is $1,800, what is the amount allocated to food?
A. $900
B. $720
C. $675
D. $400
Answer: D. $400
Explanation: To solve this question, it will be best to first express the given ratio using variable multipliers. Thus, we have:
Household Expenses : Food : Miscellaneous = 5x : 2x : 2x
Since we are told that the TOTAL amount allocated to these categories is $1,800 we can set up the equation:
5x + 2x + 2x = 1,800
9x = 1,800
x = 200
Thus, the total amount allocated to food is 2 x 200= $400.
Answer D.
Question: A car covers a distance of 900 km in10 hrs. What is its speed in mps.
A.40 m/s
B.25 m/s
C.20 m/s
D.15 m/s
Answer: B.25 m/s
Explanation: Explanation:
Distance = Speed x Time
Speed = (900/10) = 90 kmph
Spees in mps = 90 x 5/18 = 5 x 5 = 25 mps.
Answer: Option B
Question: Grace packed 5 pairs of shoes, 3 pairs of pants, 8 shirts, and 3 jackets for her business trip. If an outfit consists of one of each item of clothing except shirts, of which she will wear 2, how many different outfits D can does Grace have available during her trip?
A. 2,520
B. 1,260
C. 620
D. 360
Answer: B. 1,260
Explanation: The idea is to multiply the number of possibilities for each item of clothing with the different items. For the shirts you essentially choose 2 out of 8 so you should use the combination forumla (don't know how to use math symbols here).
This gives you D=5 x 3 x 28 x 3 = 1'260. Hence, solution B is correct.
Question: P started from his house towards west. After walking a distance of 25 m. He turned to the right and walked 10 m. He then again turned to the right and walked 15 m. After this he is to turn right at 135o and to cover 30 m. In which direction should he go?
A.South-We3
B.11
C.South-West
D.112
Answer: C.South-West
Explanation: Answer: C
Question: How much water must be added to 10 gallons of 10% brine solution to decrease the concentration to 7%?
A.0—1.5 gal
B.1.5—3 gal
C.3—4.5 gal
D.4.5—6 gal
Answer: C.3—4.5 gal
Explanation: Let amount of water that must be added in gallons to dilute concentration of brine solution = x
Amount of brine already present = 10/100 * 10 = 1 gallon
1/(10+x) *100 = 7
=>100 = 70 + 7x
=> x= 30/7 = 4.2
Answer C
Question: A day-trader plans to invest a total of $23,100 into 15 separate investments. If each investment requires a minimum deposit of $1,400, then which of the following is the maximum amount that she could put into any one investment?
A.$2,800
B.$3,000
C.$3,500
D.$3,800
Answer: C.$3,500
Explanation: We can also just keep track of the HUNDREDS DIGITS(since the hundreds digit is different for each answer choice).
Total of 14 minimized investments = (14)(1400) = $???600
The 15th investment + $???600 = $23,100
So, the HUNDREDS DIGITS of the 15th investment must be 5
Answer: C
Question: If 3y + x > 2 and x + 2y <= 3 , What can be said about the value of y?
A.y = -1
B.y >-1
C.y <-1
D.y = 1
Answer: B.y >-1
Explanation: 3y + x > 2 -----(1)
x + 2y < = 3
=> x + 2y + y < = 3 + y
=> x + 3y < = 3 + y -----(2)
from (1)&(2)
2 < 3y + x < 3 + y
=> 2 < 3 + y
=> -1 < y
=> y > -1
ANSWER:B
Question: A train traveling at 216 kmph crosses a platform in 30 seconds and a man standing on the platform in 12 seconds. What is the length of the platform in meters?
A.240 meters
B.360 meters
C.420 meters
D.720 meters
Answer: D.720 meters
Explanation: Answer
Distance covered by the train when crossing a man and when crossing a platform
When a train crosses a man standing on a platform, the distance covered by the train is equal to the length of the train.
However, when the same train crosses a platform, the distance covered by the train is equal to the length of the train plus the length of the platform.
The extra time that the train takes when crossing the platform is on account of the extra distance that it has to cover. i.e., length of the platform.
Compute length of platform
Length of the platform = speed of train * extra time taken to cross the platform.
Length of platform = 216 kmph * 12 seconds
Convert 216 kmph into m/sec
1 kmph = 5/18 m/s (This can be easily derived. But if you can remember this conversion, it saves a good 30 seconds).
∴ 216 kmph = 5/18∗216 = 60 m/sec
Therefore, length of the platform = 60 m/s * 12 sec = 720 meters.
Choice D
Question: A part of certain sum of money is invested at 9% per annum and the rest at 18% per annum, if the interest earned in each case for the same period is equal, then ratio of the sums invested is?
A.4:2
B.2:1
C.4:3
D.4:0
Answer: B.2:1
Explanation: 18:9
= 2:1
Answer: B
Question: Find the odd man out
1, 2, 5, 14, 41, 121
A.2
B.121
C.124
D.41
Answer: B.121
Explanation: 1*3-1 =2
2*3-1 = 5
5*3-1 = 14
14*3-1 = 41
41*3 -1 = 122
ANSWER:B
Question: A man walks 6 km at a speed of 1 1/2 kmph, runs 8 km at a speed of 2 kmph and goes by bus another 32 km. Speed of the bus is 8 kmph. Find the average speed of the man.
A.4 (5/6) kmph
B.3 (5/6) kmph
C.5 (7/6) kmph
D.6 (7/6) kmph
Answer: B.3 (5/6) kmph
Explanation: Man walked 6 km at 1.5 kmph, again he walked 8 km at speed of 2 kmph and 32 km at a speed of 8kmph
time taken indivisually:
=> 6/1.5 = 4 m
=> 8/2 = 4 m
=> 32/8 = 4 m
Average speed of man= total distance/ total time
=> 46/12 = 3 (5/6)
ANSWER:B
Question: Two pipes A and B can separately fill a tank in 16 and 10 minutes respectively. A third pipe C can drain off 60 liters of water per minute. If all the pipes are opened, the tank can be filled in 10 minutes. What is the capacity of the tank?
A.590 liters
B.960 liters
C.740 liters
D.560 liters
Answer: B.960 liters
Explanation: 1/16 + 1/10 - 1/x
= 1/10
x = 12
16 * 60 = 960
Answer:B
Question: Two pipes a and b separately fill in 15/2 min and 5 min respactively and third pipe c can empty of 14l/m if all the pipes are open when the cistern is full, it is emptied in 1 hr. how many litres does the cistern hold?
A.40
B.30
C.50
D.80
Answer: A.40
Explanation: LET TOTAL WATER IN CISTERN=X LITER
SPEED OF A=2X/15 L/M (SPEED=LITER/TIME)
SPEED OF B=X/5 L/M
SPEED OF C=14 L/M
ACCORDING TO QUESTION
X+(X/5+2X/15)*60=60*14
X+=60*14
X=40 LITER
ANSWER:A
Question: A man wants to sell his scooter .There are two offers one at Rs12000 cash and other at a credit of Rs12880 to be paid after 8 months ,money being at 18% per annum which is better offer?
A.Rs.12880
B.Rs.12000
C.Both are equally good
D.None of the above
Answer: B.Rs.12000
Explanation: Explanation:
PW of Rs.12,880 due 8 months hence
=Rs.[12880×100/100+(18×812)]=Rs.11500=
Clearly 12000 in cash is a better offer.
Answer: B
Question: A person X working alone can complete a work in 5 days. A person Y completes the same amount of work in 15 days, and a person Z when working alone can complete the same amount of work in 30 days. All three people work together for 2 days but then X and Y leave. How many more days does Z need to complete the work after X and Y leave?
A.11
B.12
C.13
D.14
Answer: B.12
Explanation: The fraction of work completed in two days is 2/5 + 2/15 + 2/30 = 18/30
The fraction of work remaining is 1 - 18/30 = 12/30
The number of days required for Z is 12 days.
The answer is B.
Question: Round off the given number to nearest hundreds
5672
A.5800
B.5600
C.6000
D.5700
Answer: D.5700
Explanation: the given number is 5672
its tens digit is 7. so replace each of the tens and ones digit by 0 and increase the hundreds digit by 1 to get the rounded off number to the nearest hundred.
correct answer (D)
Question: If k is a non-negative integer and 12^k is a divisor of 856,736 then 3^k - k^3 =
A.0
B.1
C.36
D.120
Answer: B.1
Explanation: 8+5+6+7+3+6 = 35, so this number is not divisible by 3 and thus not divisible by 12.
Therefore, k=0
3^k - k^3 =1-0=1
The answer is B.
Question: The end of a blade on an airplane propeller is 10 feet from the center. If the propeller spins at the rate of 1,320 revolutions per second, how many miles will the tip of the blade travel in one minute? (1 mile = 5,280 feet)
A.200π
B.240π
C.300π
D.480π
Answer: C.300π
Explanation: Distance traveled in 1 revolution = 2πr= 2π10/5280
Revolutions in one second= 1320
Revolutions in 60 seconds (one minute)= 1320*60
Total distance traveled= total revolutions *distance traveled in one revolution
1320*60 *2π10/5280= 300π
C is the answer
Question: A student chose a number, multiplied it by 2, then subtracted 138 from the result and got 102. What was the number he chose?
A.120
B.240
C.360
D.480
Answer: A.120
Explanation: Let x be the number he chose, then
2*x-138=102
2x=240
x=120
correct answer A
Question: A and B can do a piece of work in 16 days, B and C in 24 days, C and A in 12 days. How long will C take to do it?
A.16 days
B.55 days
C.24 days
D.32 days
Answer: D.32 days
Explanation: 2c = 1/24 + 1/12 – 1/16 = 1/16
c = 1/32 => 32 days
Answer: D
Question: Company S produces two kinds of stereos: basic and deluxe. Of the stereos produced by Company S last month, 2/3 were basic and the rest were deluxe. If it takes 8/5 as many hours to produce a deluxe stereo as it does to produce a basic stereo, then the number of hours it took to produce the deluxe stereos last month was what fraction of the total number of hours it took to produce all the stereos?
A.7/17
B.14/31
C.4/9
D.17/35
Answer: C.4/9
Explanation: # of basic stereos was 2/3 of total and # of deluxe stereos was 1/3 of total, let's assume total=15, then Basic=10 and Deluxe=5.
Now, if time needed to produce one Deluxe stereo is 1 unit than time needed to produce one Basic stereo would be 8/5 units. Total time for Basic would be 10*1=10 and total time for Deluxe would be 5*8/5=8 --> total time for both of them would be 10+8=18 --> deluxe/total=8/18=4/9.
Answer: C.
Question: The simple interest on a certain sum of money at the rate of 5% p.a. for 8 years is Rs. 840.At what rate of interest the same amount of interest can be received on the same sum after 5 years ?
A.6%
B.8%
C.9%
D.10%
Answer: B.8%
Explanation: Solution
S.I. = Rs. 840,R =5%,T= 8 Years.
Principal = Rs.(800x840/5x8)= Rs. 2100.
Now,P = Rs. 2100,S.I. = Rs. 840, T = 5 years.
∴ Rate =(100x840/2100x5) = 8%.
Answer B
Question: A sum fetched a total simple interest of 4043.25 at the rate of 9 %.p.a. in 5 years. What is the sum?
A.5768
B.8985
C.2345
D.6474
Answer: B.8985
Explanation: Principal = (100 x 4043.25)/(9 x 5)
= 404325/45
= 8985.
ANSWER B
Question: Addison High School’s senior class has 160 boys and 200 girls. If 75% of the boys and 84% of the girls plan to attend college, what percentage of the total class plan to attend college?
A.75
B.79.5
C.80
D.83.5
Answer: C.80
Explanation: Number of boys attending the party : 0.75*160 = 120
number of girls attending the party: 0.84*200 = 168
Total attending = 120+168 = 288
Total people = 160+200 = 360
% of people attending = 288/360 = 80%. C is the correct answer
Question: A tiger is chasing its prey at a constant speed. It entire body passes a blade of grass in 1 second. It then runs above a fallen tree trunk that is 20 meters long in 5 seconds. What is the length of the tiger?
A.6 m
B.5 m
C.4 m
D.3 m
Answer: B.5 m
Explanation: Sol.Let the length of the tiger be x metres and its speed be y m/sec. Then, x / y = 1 ⇒ y = x∴ (x + 20) / 5 = x ⇔ x = 5 m. Answer B
Question: 9 business executives and 7 chairmen meet at a conference. If each business executive shakes the hand of every other business executive and every chairman once, and each chairman shakes the hand of each of the business executives but not the other chairmen, how many handshakes would take place?
A.144
B.131
C.99
D.90
Answer: C.99
Explanation: there are 9 business exec and in each handshake 2 business execs are involved.
hence 9C2=36
Also, each of 9 exec will shake hand with every 7 other chairmen for total of 63 handshake.
total=36+63=99
ANS: C
Question: The Natural Woman, a women's health food store, offers its own blends of trail mix. If the store uses 4 different ingredients, how many bins will it need to hold every possible blend, assuming that each blend must have at least two ingredients? (Also assume that each bin can hold one and only one blend.)
A.1
B.4
C.7
D.11
Answer: D.11
Explanation: We're told that there are 4 ingredients (we'll call them A, B, C and D); we're told that each 'mix' must include AT LEAST 2 ingredients...
2 ingredient blends:
AB
AC
AD
BC
BD
CD
3 ingredient blends:
ABC
ABD
ACD
BCD
4 ingredient blends:
ABCD
Total blends = 6+4+1 = 11
Final Answer:D
Question: A cube of edge 17cm is immersed completely in a rectangular vessel containing water. If the dimensions of the base of vessel are 20cm * 15cm , find the rise in water level?
A.6cm
B.8.25cm
C.11.25cm
D.16.37cm
Answer: D.16.37cm
Explanation: Increase in volume = volume of the cube = 17*17*17 cm^3
Rise in water level = volume / area = 17*17*17/20*15 = 16.37cm
Answer is D
Question: A train 90 meters long is running with a speed of 54 kmph. The time taken by it to cross a tunnel 120 meters long is?
A.29
B.18
C.14
D.99
Answer: C.14
Explanation: D = 90 + 120 = 210
S = 54 * 5/18 = 15 mps
T = 210/15 = 14 sec
Answer: C
Question: A right circular cylinder has a height of 20 and a radius of 5. A rectangular solid with a height of 15 and a square base, is placed in the cylinder such that each of the corners of the solid is tangent to the cylinder wall. Liquid is then poured into the cylinder such that it reaches the rim. What is the volume of the liquid?
A.500(π – 3)
B.500(π – 2.5)
C.500(π – 2)
D.500(π – 1.5)
Answer: D.500(π – 1.5)
Explanation: The square base has sides of sqrt(50) due to the 45-45-90 triangle
20*25*pi - 15*sqrt(50)^2
=500(π – 1.5)
D. 500(π – 1.5)
Question: The sum of the present age of Henry and Jill is 33. What is their present ages if 6 years ago Henry was twice the age of Jill?
A.and 20
B.and 24
C.and 22
D.and 29
Answer: A.and 20
Explanation: Let the age of Jill 6 years ago be x, age of Henry be 2x
x+6 + 2x+6 = 33
x = 7
Present ages will be 13 and 20
Answer : A
Question: The sum of the two numbers is 11 and their product is 35. What is the sum of the reciprocals of these numbers?
A.12/35
B.11/35
C.35/8
D.7/32
Answer: B.11/35
Explanation: Let the numbers be a and b. Then, a+b=11 and ab =35.
a+b/ab=11/35; (1/b+1/a)=11/35
Sum of reciprocals of given numbers=11/35.
Correct Option: B
Question: A money lender lends Rs.2000 for six months at 20% p.a. rate. It the interest is reckoned quarterly than find the amount given after time limit.
A.2205
B.2877
C.2378
D.2988
Answer: A.2205
Explanation: A = 2000(21/20)2 = 2205.Answer:A
Question: A library has an average of 660 visitors on Sundays and 240 on other days. The average number of visitors per day in a month of 30 days beginning with a Sunday is:
A.250
B.276
C.280
D.310
Answer: D.310
Explanation: Since the month begins with sunday,to there will be five sundays in the month
Average required = (660x5 + 240x25) /30) = 310
Answer: Option D
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
B.272
C.278
D.277
Answer: A.150
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 the area of circle is 616 sq cm then its circumference?
A.22
B.88 cm
C.99
D.66
Answer: B.88 cm
Explanation: 22/7 r2 = 616 => r = 14
2 * 22/7 * 14 = 88.Answer:B
Question: Which number should replace both the asterisks in (* /18) x (*/72) = 1 ?
A.24
B.30
C.36
D.42
Answer: C.36
Explanation: Let (y/18) x (y/72) = 1
y^2 = 18 x 72 = 18 x 18 x 4
y = (18 x 2) = 36
The answer is C.
Question: A part-time employee whose hourly wage was decreased by 20 percent decided to increase the number of hours worked per week so that the employee's total income did not change. By what percent Q should the number of hours worked be increased?
A.12.5%
B.20%
C.25%
D.50%
Answer: C.25%
Explanation: Correct Answer: C
Solution: C. We can set up equations for income before and after the wage reduction. Initially, the employee earns W wage and works H hours per week. After the reduction, the employee earns .8W wage and works X hours. By setting these equations equal to each other, we can determine the increase in hours worked: WH = .8WX (divide both sides by .8W) 1.25H = X We know that the new number of hours worked will be Q=25% greater than the original number. The answer is C.
Question: Look at this series: 4, 7, 25, 10, __, 20, 16, 19, ... What number should fill the blank?
A.15
B.13
C.17
D.19
Answer: B.13
Explanation: B
13
Two series alternate here, with every third number following a different pattern. In the main series, 3 is added to each number to arrive at the next. In the alternating series, 5 is subtracted from each number to arrive at the next.
Question: A straight line is formed using two points A(3,3) and B(6,6). Another point P(x,y) lies between A and B such that AP/BP = 8. What are the coordinates of P?
A.(7/3, 7/3)
B.(17/3, 17/3)
C.(8/9, 8/9)
D.(8/3, 8/3)
Answer: B.(17/3, 17/3)
Explanation: The equation of the straight line is y = x, so the x- and y-coordinates of P are the same.
The x, y coordinates are 8/9 of the distance from 3 to 6.
x = 3 + (6-3)*(8/9) = 3 + 8/3 = 17/3 = y
The answer is B.
Question: The average runs of a cricket player of 12 innings was 48. How many runs must he make in his next innings so as to increase his average of runs by 10?
A.12
B.142
C.164
D.178
Answer: D.178
Explanation: Explanation:
Average after 13 innings = 58
Required number of runs = (58 * 13) – (48 * 12)
= 754 – 576 = 178
ANSWER D
Question: Rebecca's annual income is $15 and Jimmy's annual income is $18. By how much must Rebecca's annual income increase so that it constitutes 55% of Rebecca and Jimmy's combined income?
A.8
B.7
C.9
D.10
Answer: B.7
Explanation: total rebecca = x+15; total = x+15+18
x+15/x+33 = 55/100 therefore x =7
B
Question: A motorist travel to a place 150 km away at an average speed of 70 km/hr and returns at 30 km/hr.His average speed for the whole journey in km/hr is
A.36 km/hr
B.37 km/hr
C.40 km/hr
D.42 km/hr
Answer: D.42 km/hr
Explanation: Explanation:
Average speed will be
2xy/x+y km/hr
= {2(70)(30)}/{70+30} km/hr
= 42 km/hr
Answer: Option D
Question: Two trains 125 meters and 165 meters in length respectively are running in opposite directions, one at the rate of 80 km and the other at the rate of 65 kmph. In what time will they be completely clear of each other from the moment they meet?
A.7.2
B.7.17
C.7.19
D.7.15
Answer: A.7.2
Explanation: T = (125 + 165)/ (80 + 65) * 18/5
T = 7.2
Answer:A
Question: A person was asked to subtract 25% of a number from the original but he subtracted 25 from the number. His answer was 25 more than correct one. What was the original number?
A.297
B.187
C.278
D.200
Answer: D.200
Explanation: 25 + 25 = 50
25% ------ 50
100% ----- ? => 200
Answer:D
Question: Find the area of circle whose radius is 7m?
A.298
B.154
C.267
D.268
Answer: B.154
Explanation: 22/7 * 7 * 7 = 154
Answer: B
Question: A certain basketball team that has played 2/3 of its games has a record of 14 wins and 6 losses. What is the greatest number of the remaining games that the team can lose and still win at least 3/4 of all of its games?
A. 1
B. 6
C. 5
D. 4
Answer: A. 1
Explanation: 14 wins, 6 losses - total 20 games played.
The team has played 2/3rd of all games so total number of games = 30
3/4th of 30 is 22.5 so the team must win 23 games and can afford to lose at most 7 total games. It has already lost 6 games so it can lose another 1 at most.
Answer (A)
Question: How many 5-letter words can be formed using the letters of the English alphabet that contain 3 different vowels and 2 different consonants?
A.4!*5c3
B.4!*5c3 *21c2
C.4!*21c2
D.3!*5c3 *21c2
Answer: B.4!*5c3 *21c2
Explanation: combination for 2 vowels out of 5 =5c3 ways
combination for 3 consonants of 21 = 21c2 ways
Additionally the arrangement can be = 5!
total arrangements =4!*5c3 *21c2
B
Question: A box contains 2 white balls, 3 black balls and 4 red balls. In how many ways can 3 balls be drawn from the box, if at least one black ball is to be included in the draw?
A.32
B.48
C.64
D.96
Answer: C.64
Explanation: We may have 1 black and 2 non black or 2 black and 1 non black or 3 black
Required number of ways = (3C1 x 6C2) + (3C2 x 6C1) + 3C3
= [3 x (6x5)/(2x1)] + [(3x2)/(2x1) x 6] + 1 = 45 +18 + 1 = 64.
Answer C.
Question: Ten percent of the women in a college class are science majors, and the non-science majors make up 80% of the class. What percentage of the men are science majors if 40% of the class are men?
A.15%
B.25%
C.35%
D.45%
Answer: C.35%
Explanation: Science majors make up 0.2 of the class.
60% of the class are women and 0.1*0.6 = 0.06 of the class are female science majors.
Then 0.14 of the class are male science majors.
0.4x = 0.14
x = 0.35 = 35%
The answer is C.
Question: Among the employees of a certain company, 52 percent of the employees are male and 48 percent are female. In this company 70 percent of the male employees are married and 50 percent of the female employees are married. If one employee in the company is randomly selected, approximately what is the probability that he or she is NOT married?
A.0.3
B.0.4
C.0.5
D.0.6
Answer: B.0.4
Explanation: Total Males = 52
Total Female = 48
Total = 100
Not married Male = 30% = 15.6
Not marries Female = 50% = 24
Total = 39.6
Probability = 39.6/100 = .396 = approx .4
ANSWER:B
Question: In marathon Sam was faster than Jack. Denise beat Jim but lost to Jack. Who is the winner?
A.Sam
B.Jack
C.Denise
D.Jim
Answer: A.Sam
Explanation: Denise beat Jim
Jack beat Jim
Sam beat Jack
So Sam is the winner
ANSWER:A
Question: . The average of first ten prime numbers which are odd is?
A.22.9
B.28.1
C.12.9
D.15.8
Answer: D.15.8
Explanation: Explanation:
Sum of first 10 prime no. which are odd = 158
Average = 158/10 = 15.8
Answer:D
Question: A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 6 km/hr, find the time taken by the boat to go 69 km downstream.
A.3.6 hr
B.5.25 hr
C.8.25 hr
D.2.25 hr
Answer: A.3.6 hr
Explanation: speed of boat in still water = 13 km/hr
speed of the stream = 6 km/hr
Speed downstream = (13+6) = 19 km/hr
Time taken to travel 69 km downstream = 69â„19 = 17â„4 = 3.6 hours
Answer is A