Question

24389 is a perfect cube. Find the unit's digit of its cube root. 24389 is a perfect cube. Find the unit's digit of its cube root.

Answer 1

Answer:

9

Step-by-step explanation:

We divide the number 24389 into two parts. One is 24 and the other is 389. In the second part, the unit place of 389 is 9. Therefore it will have 9 in its cuberoot. We have to estimate the cuberoot of the first part that is 24 Therefore 8 <24 <27

3√8 < 3√24 <3√ 27

2<3√24 <3

Cuberoot of 24 lies between 2 and 3

We will take the smaller number that is 2

Therefore the number is 29