1.

Find the cube root of 531441.1. 812. 913. 714. 895. None of these.

Answer» Correct Answer - Option 1 : 81

Concept used:-

Trick to find cube root of a number.

Method and Calculation:-

 • Find the unit digit of cube root by looking at unit digit of given number.

For cube root of 531441, unit digit must be 1 (13 is 1)

 • Find other digit(s) by ignoring the last three digits of number and looking at remaining digits.

512 < 531 < 729 (512 and 729 are cubes of 8 and 9, so remaining part of cube root will be 8)

Hence, 81 is our answer.



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