Show that one and only one of n;n+4;n+2 is divisible by 3

1.	Show that one and only one of n;n+4;n+2 is divisible by 3
Answer» Take n =3qSo first n is divisible by 3Both n+4;n+2is also divided by 3 but it leaves reminder and n does not leave any reminder so n is divisible by 3 N

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