Question

which among the following is a perfect square (a) 92. ( b) 288.(c) 1053. (d) 400. in ( mcqs)​

Answer 1

Answer:

400 is a perfect square..

As LCM of 400 is 2*2*2*2*5*5

So we will make pair..

2*2 is 1st pair

2*2 is 2nd pair

5*5 is 3rd pair..

So 400.is a square of 2*2*5..

That is 20..