Question

EXERCISE 7.1
Out of the following numbers which are not perfect cubes?
(b) 129
(c) 1000 (d) 100
Find the smallest number by which each of the following
(e) 46656​

Answer 1

Step-by-step explanation:

1000 is a perfect cube..

prime factorisation of 1000 is

1000=2×2×2×5×5×5

100 is not perfect cube

prime factorization of 100 is

100= 2×2×5×5

129 is not perfect cube it is nearest to 125 5√125