Question

by what least number should 810 be multiplied is to get a perfect square

Answer 1

Answer:

by 2 you will get the least no.

Answer 2

Answer:

810 u need to prime factorise then we get: 2*3*3*3*3*5

now we need to pair them and after pairing 5 and 2 doesn't have a pair.

so we must multiply 2*5=10

and there fore the least number to be multiplied to 810 is 10

810*10= 8100