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ACTIVITY: Which of the following does not belong to the group?
2/3 , 6/9 , 10/20 , 12/28 , 20/30

2/5 , 10/25 , 20/40 , 30/75 , 40/100

4/5 , 12/25 , 20/25 , 28/35 , 32/48

3/7 , 9/27 , 12/36 , 15/45 , 20/60

1/5 , 5/15 , 7/28 , 9/36 , 10/40​