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Using the combination formula, it is found that he can make 4 different stacks.
The order in which the balls are selected is not important, as stated in the problem. hence the <em>combination formula</em> is used to solve this question. If the order was important, then the permutation formula would be used.
<h3>What is the combination formula?</h3> is the number of different combinations of x objects from a set of n elements, given by:
In this problem, he has four flavors, and will choose three of them for the stacks, hence the number of different stacks is given as follows:
He can make 4 different stacks.
More can be learned about the combination formula at brainly.com/question/25821700
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