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  ANSWERS: Determining Prime Numbers

  

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Using the Divisibility Test, determine whether the following are divisible by 7, 11 and 13: (the following numbers are not divisible aside from what is stated below)

  • 231 divisible by 7 and 11

  • 513 not divisible

  • 623 divisible by 7

  • 741 divisible by 13

  • 1001 divisible by 7, 11 and 13

Using the Prime Number Test, determine whether the following are prime or composite:

  • 187 COMPOSITE

  • 299 COMPOSITE

  • 433 PRIME

  • 631 PRIME

  • 889 COMPOSITE

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