Question

2. Which of the following is a perfect
cube?
512
250

81
100​

Answer 1

To know this we have to find the cuberoot of the all numbers that is given by you.

This are as follows,

• √512 =8
• √250= near cube of 6 and cube of 7
• √81= it is square of 9 but we discussed about cube so it is come between cube of 4 and 5
• √100=it square of 10 but in cube it is come between cube of 4 and 5

Hence, 512 is only the perfect cube