Question

N(n+1)(n+2)(n+3) is a multiple of 4

Answer 1

Explanation:

note : prduct two consuctif numbers is even number

so : n(n+1) = 2k

(n+2)(n+3) = 2k'

n(n+1)(n+2)(n+3) = 4kk'

n(n+1)(n+2)(n+3) = 4a a=kk' so multiple of 4