Question

if we subtract three from a number.it becomes a perfect square.the original number cannot end in which following
a) 2
b)3
c)7
d)0

Answer 1

Hi friend,

Here's your answer,

Any (perfect square + 3) can not end with the number 0

0²+3= 3
1²+3= 4
2²+3= 7
3²+3= 12
4²+3= 17
5²+3= 28
6²+3= 39
7²+3=42
8²+3=67
9²+3=84

Every original number of this question will end with
2, 3, 4, 7, 8, 9.


Hence, proved that
(perfect square+3) can not end with 0

Hope it helps!!!!

#yashankΠsingh