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# Greatest commen factor for these numbers?

Im not sure if im doing it right so what are he GCF for these numbers

12 and 9

24 and 16

45 and 20

12 and 42

30 and 50

36 and 12

100 and 250

### 3 Answers

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- Anonymous1 decade agoFavorite Answer
12 and 9 = 3

24 and 16 = 8

45 and 20 = 5

12 and 42 = 6

30 and 50 = 10

36 and 12 = 12

100 and 250 = 50

- NICHOLASLv 51 decade ago
What is the largest whole number that will divide into each pair without a remainder. Knowing your tables makes this an easy exercise.

eg. 12 and 9 Could it be 3?

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