Question

1. Which of the following number is not perfect cube

1. 216 2. 1000 3. 128 4. 729​

Answer 1

Answer:

1) $\sqrt[3]{216}$ = 6

2) $\sqrt[3]{1000\\}$ = 10

3) $\sqrt[3]{128}$ = 5.039

4) $\sqrt[3]{729}$ = 9

so all the option except 3) 128 are having the a real positive natural number

but cube root of 128 is not a real positive natural number

it has its cube root in decimals

thus the number which is not having a perfect cube is 128

answer is 3)128

Step-by-step explanation:

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