A three digit number XYZ, where X,Y,Z are integers belonging to the set {0,1,2,3,4,5,6,7,8,9}, is divisible by 3 if and only if 3 divides the sum X+Y+Z.
Nino K.
asked • 10/29/20The set of elements of a three-digit natural number divided by 3 is
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