Question

Identify the perfect squares among the following numbers:
$1,2,3,8,36,49,65,67,71,81,169,625,125,900,100,1000,100000$

Answer 1

Perfect square numbers are the numbers whose square root is a positive integer.

Now, as we can see

$\sqrt{1}=1,\sqrt{36}=6,\sqrt{49}=7,\sqrt{81}=9,\sqrt{169}=13,\sqrt{625}=25,\sqrt{900}=30,\sqrt{100}=10$

So, the perfect squares among the above are:

$1,36,49,81,169,625,900,100$

Following are not perfect squares:-
$2,3,8,65,67,71,125,1000,100000$