Question

Cube root of 226981 is

• A. 71
• B. 61
• C. 51

Answer 1

The correct option is B 61

Given number is 226981
The last three digits are 981$\to$ ends with 1, hence the cube root of the given number has its unit digit as 1.
since $1^3=1$
The first three digits is 226. We know that,
$6^3<226<7^3$
For ten's digit we need to consider the smaller number.
Hence, the ten's digit is 6.
Thus, the cube root is 61.