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Which of the following groups of numbers are all prime numbers? (a)2, 5, 15, 19 (b)3, 11, 23, 31 (c)2, 3, 5, 9 (d)7, 17, 29, 49 |
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Answer» Which of the following groups of numbers are all prime numbers? (a)2, 5, 15, 19 (b)3, 11, 23, 31 (c)2, 3, 5, 9 (d)7, 17, 29, 49 Solution: |
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