If three times a number is minus
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Using the combination formula, it is found that there are 84 ways to choose the three tiles.
The order in which the tiles are chosen is not important, hence the <em>combination formula</em> is used to solve this question.
<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, three tiles are chosen from a set of nine, hence:
There are 84 ways to choose the three tiles.
More can be learned about the combination formula at brainly.com/question/25821700