Question

By PMI n (n+1)(2n+1) is dividble by 6

Answer 1

Step-by-step explanation:

Sub any value of n

if n=1

1(1+1)(2(1)+1)

1(2)(3)

=6✓

if n=2

2(2+1)(2(2)+1)

2(3)(5)

=30✓