Question

The following numbers are obviously not perfect squares. Give reason. (v) 64000 (vi) 89722(vii) 222000 (viii) 505050

Answer 1

Answer:

Step-by-step explanation:

A number can be a perfect square only when it has unit digit among 1,4,9,6,5.

In all the given numbers, the unit digit is not equal to any of digits 1,4,9,6,5.

So, all given numbers are not perfect squares.

Answer 2

Answer:

because while taking out their L.C.M. they are not having the perfect pairs of no.

for example , to have a perfect square the pair should be

2² x 2² x 2² ... like this is ✅

not 2 x3 x2² x4... is wrong ❌

hope u have understood