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Which of the following groups of numbers are all prime numbers?  A. 7, 17, 29, 49B. 3, 11, 23, 31C. 2, 5, 15, 19D. 2, 3, 5, 9
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Which of the following groups of numbers are all prime numbers? 

A. 7, 17, 29, 49B. 3, 11, 23, 31C. 2, 5, 15, 19D. 2, 3, 5, 9

User JSancho
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1 Answer

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The answer is B because all prime numbers are multiplied by one.
User Matt Seymour
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