Which of the following numbers is not a perfect cube?
a. 216
b. 567
c. 125
d. 343

Solution:

We know that

216 = 6 × 6 × 6

567 = 3 × 3 × 3 × 3 × 7

125 = 5 × 5 × 5

343 = 7 × 7 × 7

It is shown clearly that 567 is not a perfect cube

While grouping the factors in triplets, two factors 3 × 7 is pending

Therefore, the number 567 is not a perfect cube.

✦ Try This: Which of the following numbers is not a perfect square? a. 4, b. 18, c. 9, d. 25

☛ Also Check: NCERT Solutions for Class 8 Maths

NCERT Exemplar Class 8 Maths Chapter 3 Problem 18

Which of the following numbers is not a perfect cube? a. 216, b. 567, c. 125, d.343

Summary:

The number 567 is not a perfect cube

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