Question

(I need picture of method)


You are told that 1331 is a perfect cube. Can you guess without factorization what is its cube root? Similarly, guess the cube roots of 4913, 12167, 32768​

Answer 1

Answer:

We know that, since, the unit digit of cube is 1, the unit digit of cube root is 1. ∴ We get 1 as unit digit of the cube root of 1331.

Answer 2

Answer:

Can you guess without factorisation what is its cube root? Similarly, guess the cube roots of 4913, 12167, 32768. We know that, since, the unit digit of cube is 1, the unit digit of cube root is 1. ∴ We get 1 as unit digit of the cube root of 1331.