Question

Question 3(i)
You are told that 1,331 is a perfect cube. Can you guess with factorization what is its cube root? Similarly guess the cube roots of 4913.

Answer 1

We know that ${10}^3$ = 1000 and Possible cube of ${11}^3$ = 1331
Since, cube of unit’s digit 11 = 1
Therefore, cube root of 1331 is 11.
4913 We know that $7^3$=343
Next number comes with 7 as unit place ${17}^3$ = 4913
Hence, cube root of 4913 is17.