Question

What will be the unit digit of the cube root of a number ends with 2?

(a) 2
(b) 8
(c) 4
(d) 6

Answer 1

The unit digit of the cube root of a number ending with 2 will be 8.

Step-by-step explanation:

The unit digit of a number ending with 2 can only be 2, 12, 22, 32, and so on. When we cube these numbers, we get 8, 1728, 10648, 32768, and so on. In each case, the unit digit of the cube is 8. Therefore, the unit digit of the cube root of a number ending with 2 will be 8.

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