mathematics MCQs – Page 76

Practise multiple-choice questions from mathematics for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

mathematics Mcqs

1501. A river 2m deep and 45 m wide is flowing at the rate of 3 kmph the amount of water that runs into the sea per minute is?
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A. 3000 M3

B. 4500 M3

C. 2700 M3

D. 27000 M3

1502. If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55, 60, then the average marks of all the students is__________?
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A. 55

B. 54.68

C. None of these

D. 53.33

1503. Find the area of a parallelogram with base 24 cm and height 16 cm.
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A. 384 cm2

B. 262 cm2

C. 192 cm2

D. 131 cm2

1504. One pipe can fill a tank three times as fast as another pipe. If together the two pipes can fill the tank in 36 minutes, then the slower pipe alone will be able to fill the tank in:
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A. 192 min.

B. 144 min.

C. 81 min.

D. 108 min.

1505. pipes P and Q would fill a cistern 18 and 24 minutes respectively. Both pipes being opened, find when the first pipe must be turned off so that the cistern may be just filled in 12 minutes?
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A. after 8 1/2 mins

B. after 12 mins

C. after 10 mins

D. after 9 mins

1506. If four coins are tossed, the probability of getting two heads and two tails is__________?
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A. 11-Jun

B. 3/8

C. 5-Apr

D. 5-Feb

1507. A cylinder and a cone have a same height and same radius of the base. The ratio between the volumes of the cylinder and cone is__________?
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A. 1:03

B. 3:1

C. 2:01

D. 1:02

1508. A tap can fill a tank in 6 hours. After half the tank is filled three more similar taps are opened. What is the total time taken to fill the tank completely?
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A. 3 hrs 45 min

B. 4 hrs

C. 3 hrs 15 min

D. 4 hrs 15 min

1509. Two pipes A and B can fill a cistern in 12 and 15 minutes respectively. Both are opened together but after 3 minutes A is turned off. After how much more time will the cistern be filled?
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A. 3 1/4 min

B. 8 1/4 min

C. 9 1/4 min

D. 5 1/4 min

1510. The volumes of two cubes are in the ratio 27: 125, what shall be the ratio of their surface areas?
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A. 9:25

B. 3:05

C. 6:25

D. 16:25

1511. A metal sheet 27 cm long 8cm broad and 1 cm thick is melted into a cube. The difference between the surface areas of two solids is__________?
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A. 284 cm2

B. 286 cm2

C. 300 cm2

D. 296 cm2

1512. Out of 10 persons working on a project, 4 are graduates. If 3 are selected, what is the probability that there is at least one graduate among them?
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A. 5/6

B. 8-Mar

C. 8-May

D. 6-Jan

1513. Find the greatest number which, while dividing 19, 83 and 67, gives a remainder of 3 in each case?
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A. 16

B. 19

C. 17

D. 18

1514. The radius of a wheel is 22.4 cm. What is the distance covered by the wheel in making 500 resolutions.
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A. 352 m

B. 808 m

C. 252 m

D. 704 m

1515. The perimeter of a triangle is 28 cm and the inradius of the triangle is 2.5 cm. What is the area of the triangle?
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A. 49 cm2

B. 42 cm2

C. None of these

D. 25 cm2

1516. A large cube is formed from the material obtained by melting three smaller cubes of 3, 4 and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube?
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A. 2:01

B. 27:20:00

C. 25 : 18

D. 3:02

1517. A bag contains five white and four red balls. Two balls are picked at random from the bag. What is the probability that they both are different color?
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A. 5/9

B. 9-Jul

C. 9-Aug

D. 9-Apr

1518. A room is 6 meters 24 centimeters in length and 4 meters 32 centimeters in width. Find the least number of square tiles of equal size required to cover the entire floor of the room?
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A. 96

B. 117

C. 110

D. 124

1519. (i). a2
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A. If a ? b

B. If the relationship between a and b cannot be established

C. If a < b

D. If a ? b

1520. If the length, breadth and the height of a cuboid are in the ratio 6: 5: 4 and if the total surface area is 33300 cm2
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A. 85, 75, 60

B. 90, 75, 70

C. 90, 85, 60

D. 90, 75,60

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