gd 1..

I knw by adjusting 90, 91, 92, 93, 94, 95, 96 there r 7! possible numbers. How many of them are perfect square???

remainders..........

what are the remainders wn following expressions are divided by 144?
(A)1^5+2^5+3^5+....................44^5+45^5
(B)(1^5)(2^5)(3^5)....................(44^5)(45^5)
(C)1^5,2^5,3^5,....................,44^5,45^5written in a line 2get a huge no.

nd d options are
(a)zero
(b)81
(c)117
(d)45
(e)None of these