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4 October, 21:18

Which is a factor of 21

a6

b5

c4

d3

+2
Answers (2)
  1. 4 October, 23:16
    0
    3 because 7*3=21, ...
  2. 4 October, 23:27
    0
    6 cannot go into 21 evenly

    6x3=18

    6x4=24

    5 cannot go into 21 evenly

    5x4=20

    5x5=25

    4 cannoth go into 21 evenly

    4x5=20

    4x6=24

    3 can go into 21 evenly

    3x7=21
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