SOLUTION: Classify the number as prime, composite, or neither. 51

Algebra ->  Divisibility and Prime Numbers -> SOLUTION: Classify the number as prime, composite, or neither. 51       Log On


   

Question 435419: Classify the number as prime, composite, or neither.
51

Answer by solver91311(24713) About Me  (Show Source):
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The sum of the digits is 6 which is divisible by 3, hence the number is divisible by 3, therefore the number is composite.

John

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