Question

Which of the following numbers is not a perfect cube?

(A) 1331 (B) 512 (C) 343 (D) 100

Answer 1

your answer is 100 .
option D is correct.

Answer 2

(D) 100 is not a perfect cube.

Given:

The numbers (A) 1331 (B) 512 (C) 343 (D) 100

To Find:

We have to find which of the following numbers is not a perfect cube.

Solution:

This is a problem for cubes and squares.

Let us tackle the problem.

We can easily solve this problem as follows:

We can see that,

11×11×11=1331

Therefore, (A) 1331 is a perfect cube.

Again,

8×8×8=512

Therefore, (B)512 is a perfect cube.

Again,

7×7×7=343

Therefore, (C) 343 is a perfect cube.

Now we have to check if (D)100 is a perfect cube.

We can see that,

4×4×4 = 64

5×5×5 = 125

Hence, (D) 100 is not a perfect cube.

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