Question

the least number which is to be subtracted from 520 so that it becomes a perfect cube is what

Answer 1

I'm thinking it is 36

Answer 2

Answer:

The required number is 8.

Step-by-step explanation:

To find : The least number which is to be subtracted from 520 so that it becomes a perfect cube is what ?

Solution :

Taking cube root of 520,

$\sqrt[3]{520}=8.04$

i.e. $8^3<520<9^3$

$512<520<729$

As we have to fins the least number which is to be subtracted to make it is perfect cube is $520-512=8$

So, If we subtract 8 from 520 we get the perfect cube.

Therefore, The required number is 8.