Mathematics MCQs

Page No. 7

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


a8: 1

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b2√2 : 1

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c2 : 1

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dNone of these

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View Answer 2 : 1

The radius of a wire is decreased to one –third if volume remains the same length will increase


a1 Time

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b3 times

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c6 times

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d9 times

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View Answer 9 times

The length of the wire of 0.2mm radius that can be drawn after melting a solid copper sphere of diameter 18cm?


a24.3 m

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b243 m

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c2430 m

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d24300 m

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View Answer 24300 m

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?


a3

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b4

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c5

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d6

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View Answer 5

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


a4/3 times its radius

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b2/3 times its radius

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cEqual to it’s radius

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dEqual to it’s diameter

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View Answer 4/3 times its radius

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_________?


a3: 5

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b2: 5

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c3: 1

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d1: 3

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View Answer 1: 3

If the volume and surface area of a sphere is numerically the same then it’s radius is_________?


a1 unit

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b2 units

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c3 units

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d4 units

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View Answer 3 units

A gardener was asked a plant flowers in a row containing equal number of plants. He tried to plant 6, 8, 10 and 12 in each row, but 5 plants left in each case. When he planted 13 in a row, no plant was left. Find the number of plants with him?


a245

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b125

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c485

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d845

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View Answer 845

Find the smallest number which when increased by 5, divisible by 6, 9, 15, 20 and 24?


a344

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b355

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c366

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d377

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View Answer 355

Find the greatest 4-digit number exactly divisible by 3, 4 and 5?


a9985

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b9960

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c9957

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d9975

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View Answer 9960

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