Question

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

Answer 1

Answer:

8

Step-by-step explanation:

We all know that 512 is the cube of 8, so subtracting 8 from 520 will give us 512.

Answer 2

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

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

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