HARD
10th CBSE
IMPORTANT
Earn 100

Prove that one and only one out of n,n+2 and n+4 is divisible by 3, where n is any positive integer.

Important Questions on Real Numbers

HARD
10th CBSE
IMPORTANT
Prove that one of any three consecutive positive integers must be divisible by 3.
HARD
10th CBSE
IMPORTANT
For any positive integer, prove that n3-n is divisible by 6.
HARD
10th CBSE
IMPORTANT
Show that one and only one out of  n, n+4, n+8, n+8, n+12 and n+16 is divisible by 5, where n is any positive integer.