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28 May, 20:58

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

A.

4

B.

5

C.

7

D.

10

+4
Answers (2)
  1. 28 May, 22:17
    0
    The answer is 5 because, 20 = 5*4 then 4 = 2*2, from these options 5 is the answer
  2. 29 May, 00:15
    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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