Question

Prve out of three consecutive integers one is divisible b 3

Answer 1

Any three consecutive numbers are

n , n+1,n+2

Any integer when divided by 3 the possible remainders are 0,1,2

Three consecutive integers will have distinct remainders.

One of the integers will leave a remainders 1 other 2 amd the third one will have to be divisible by 3 (remainder 0 condition).