Answer :

24 = 23 x 3 

64 = 26

88 = 23 x 11 

factors in common: 23... 

1, 2, 4 & 8
24 = 2³ × 3
64 = 2³ × 2³
88 = 2³ × 11

So, the common factors are : 1, 2 , 4, 8

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