Find the square of the following number without actual multiplication. 

$95$

Find the square of the following number without actual multiplication. 

$205$

Write a Pythagorean triplet whose smallest number is $8$.

Write the Pythagorean triplet whose one member is $12$?

Write the Pythagorean triplet whose one member is $18$?

What would be the possible ones digit of the square root of given natural number?

$6561$

$24336$

What would be the possible ones digit of the square root of given natural number?

$16129$