Question

find the smallest number by which 1890must be multiplied so that the product become perfect square​

Answer 1

1890 = 2 × 3 × 3 × 3 × 5 × 7

We can see that pair of 2 , 3 , 5 and 7 is incomplete . 2 × 3 × 5 × 7 is the smallest number which make it a perfect square on multiply.

1890 × 2 × 3 × 5 × 7 = 3969001

Answer 2

this method is correct answer .