mathematics MCQs – Page 123

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 Review each marked answer and report any item that may be outdated or unclear.

2441. A man could buy a certain number of notebooks for Rs.300. If each notebook cost is Rs.5 more, he could have bought 10 notebooks less for the same amount. Find the price of each notebook?
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A. 7.5

B. 8

C. 10

D. 15

2442. The sum of the square of the three consecutive even natural numbers is 1460. Find the numbers?
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A. 22, 24, 26

B. 24, 26, 28

C. 20, 22, 24

D. 18, 20, 22

2443. (i). a<sup>2
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A. If a < b

B. If a ? b

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

D. If a ? b

2444. I. x<sup>2
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A. If x < y

B. If x ? y

C. If x ? y

D. If x > y

2445. The sum and the product of the roots of the quadratic equation x(power 2) + 20x + 3 = 0 are?
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A. -10, -3

B. -20, 3

C. -10, 3

D. 10, 3

2446. If in a box of dimensions 6 m * 5 m * 4 m smaller boxes of dimensions 60 cm * 50 cm * 40 cm are kept in it, then what will be the maximum number of the small boxes that can be kept in it?
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A. 600

B. 500

C. 900

D. 1000
2447. The area of the cardboard(in cm<sup>2
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A. 1390 cm2

B. 695 cm<sup>2</sup>

C. 1280 cm<sup>2</sup>

D. 1220 cm<sup>2</sup>

2448. A right cylinder and a right circular cone have the same radius and the same volume. The ratio of the height of the cylinder to that of the cone is_________?
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A. 2:05

B. 1: 3

C. 3:01

D. 3:05

2449. The diameters of two spheres are in the ratio 1:2 what is the ratio of their surface area?
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A. 1:02

B. 2:01

C. 1:4

D. 4:01

2450. If the volume and surface area of a sphere is numerically the same then its radius is_________?
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A. 3 units

B. 4 units

C. 1 unit

D. 2 units

2451. If the volumes of two cubes are in the ratio 8: 1, the ratio of their edges is_________?
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A. 2 : 1

B. None of these

C. 8:01

D. 2?2 : 1

2452. The surface area of a cube is 726m<sup>2
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A. 1542 m<sup>3</sup>

B. 1452 m<sup>3</sup>

C. 1331 m3

D. 1300 m<sup>3</sup>

2453. Surface area of two spheres are in the ratio 1:4 what is the ratio of their volumes?
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A. 0.086111111

B. 1:04

C. 1:8

D. 8:01

2454. The radius of a circular cylinder is the same as that of a sphere. Their volumes are equal. The height of the cylinder is________?
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A. Equal to its radius

B. Equal to its diameter

C. 4/3 times its radius

D. 2/3 times its radius

2455. The sides of a cube are in the ratio 1:2 the ratio of their volume is__________?
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A. 2:01

B. 1:04

C. 1:02

D. 1:8
2456. The number of solid spheres each of diameter 6 cm, that could be moulded to form a solid metal cylinder of height 45 cm and diameter 4 cm is?
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A. 3

B. 5

C. 6

D. 4

2457. A rectangular field 30 m long and 20 m broad. How much deep it should be dug so that from the earth taken out, a platform can be formed which is 8 m long, 5.5 m broad and 1.5 m high where as the earth taken out is increase by 10/5?
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A. 12 cm

B. 18 cm

C. 10 cm

D. 24 cm

2458. 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 cm<sup>2
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A. 90, 85, 60

B. 85, 75, 60

C. 90, 75,60

D. 90, 75, 70

2459. If the height of a cone is increased by 100% then its volume is increased by_________?
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A. 200%

B. 400%

C. 300%

D. 100%
2460. 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. 2:01

B. 1:02

C. 1:03

D. 3:1