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15 September, 15:03

Which of the following is a prime number?

A. 81

B. 51

C. 91

D. 331

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Answers (1)
  1. 15 September, 15:22
    0
    D. 331

    Step-by-step explanation:

    There are only two numbers that can be multiplied together to get 331.

    1 · 331 or 331 · 1
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