Question

3. The smallest number, by which
145800 be multiplied so that the
product is a perfect cube, is
(1) 2
(2) 3
(3) 5
(4) 11​

Answer 1

Answer:

5 is the answer

prime factor of 145800 are 2 ×2× 2 ×3 ×3× 3× 3× 3 ×3× 5 ×5

while grouping 5 × 5 remains ungroup

therefore 5 × 5 × 5 must be there so that it is a perfect cube.

So, the answer is 5.