Rebecca wants to split a collection of eggs into groups of 6. Rebecca has 18 eggs 72 bananas and 66 marbles. How many groups will be created?
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Rebecca wants to split a collection of eggs into groups of 6. 

That means she will have groups of 6 eggs, with some left over. 

If she has 18 eggs, she can make 3 groups of 6, with no eggs left over. 

That's all the information we have, so we can't say anything else about the groups.