Show that one and only one out of n( n+1) and (x+2) is divisible by 3

1.	Show that one and only one out of n( n+1) and (x+2) is divisible by 3
Answer» We applied Euclid Division algorithm on n and 3.a = bq +r on putting a = n and b = 3n = 3q +r , 0

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