Question

Smallest number by which 8788 should be multiplied to get the perfect cube

Answer 1

Hi ,

Cube of a number :
_______________

For a given number x we define cube

of x = x × x × x , denoted by x^3.

A given Natural number is a perfect 

Cube if it can be expressed as the

product of triplets of equal factors.

Now ,

Write given number as product of

prime .

8788 = 2 × 4394

= 2 × 2 × 2197

= 2 × 2 × 13 × 169

= 2 × 2 × 13 × 13 × 13 

= 2 × 2 × ( 13 × 13 × 13 )

Here we have only triplet of equal 

factors i.e 13

To make 8788 into perfect Cube we

have multiply with 2. 

Now ,

2 × 8788 = ( 2 × 2 × 2 ) × ( 13 × 13 × 13 )


17576 = ( 2 × 13 )^3 = ( 26 )^3 perfect 
Cube


Hope This Helps :)

Answer 2

the no. should be 2 
because 8788*2=17576
17576 is the cube root of 26