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Cubes and Cube Roots

Multiple Choice Questions

31. Write a number whose cube is —1?

1
-1
0

106 Views

32. If a number ends in I, then its cube ends in

123 Views

33. If the square of a number ends in 5, then its cube ends in

158 Views

Short Answer Type

34.

Find the cube root of each of the following numbers by prime factorisation method.

132 Views

35.

Find the cube root of each of the following numbers by prime factorisation method.
512

175 Views

36. Find the cube root of each of the following numbers by prime factorisation method.
(iii) 10648

237 Views

37.

Find the cube root of each of the following numbers by prime factorisation method.

27000

142 Views

38.

Find the cube root of each of the following numbers by prime factorisation method.

(v) 15625

436 Views

39.
Find the cube root of each of the following numbers by prime factorisation method.

(vi) 13824

(vi) By prime factorisation, we have

13824 = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3

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= 24

Thus, the the cube root of 13824 is 24.