Question

1. Which of the following numbers are not perfect cubes?
I)216
ii)128
iii)1000
iv)100
v)46656​

Answer 1

Answer:

128,100,46656

Step-by-step explanation:

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Answer 2

Solution:

(i) Prime factorisation of 216 is:

216 = 2 × 2 × 2 × 3 × 3 × 3

In the above factorisation, 2 and 3 have formed a group of three.

Thus, 216 is a perfect cube.