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Roman55 [17]
3 years ago
14

Which number is prime? A. 57 B. 63 C. 51 D. 59

Mathematics
2 answers:
velikii [3]3 years ago
7 0
It's D. 59, because all of the other numbers are divisible by 3, and you can tell by adding up the digits. (5 + 7 = 12, 3 × 4 = 12) (6 + 3 = 9, 3 × 3 = 9) (5 + 1 = 6, 3 × 2 = 6)
7nadin3 [17]3 years ago
5 0
D. 59 is the answer
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