Respuesta :

Wrong because there will be sometimes a number that will be dividend by three completely.

See :-

  • 93

93/3 = 31

  • 63

63/3 = 21

  • 33

33/3 = 11

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Answer:

Step-by-step explanation:

We only need to find one exception  to prove that she is wrong.

One such number is 33,  which = 3 * 11 ( noit prime).