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13 September, 03:39

Which number is a factor of 20 and also a prime number?

A.

4

B.

5

C.

7

D.

10

+3
Answers (2)
  1. 13 September, 04:54
    0
    The answer is 5 because, 20 = 5*4 then 4 = 2*2, from these options 5 is the answer
  2. 13 September, 07:18
    0
    20 = 2 x 2 x 5, which can also be written 20 = 2² x 5

    thus B is your Answer.
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