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1 February, 17:26

If Isaac has 21 green marbles and 7 blue marbles and wants to make equal groups with none left over, what is the greatest number of groups he can make?

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  1. 1 February, 17:35
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    The greatest number of groups Issac can make is 7
  2. 1 February, 17:51
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    The answer is 4 groups because 21+7=28,28:4=7, and 7*4=28
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