In how many ways girls can be divided into
teams such that all contain
girls to each.
The given information is:
Number of girls
Number of teams
Number of girls to each team
Pick first girls from
girls,
Total no. of ways of choosing is:
Pick last boys from
boys and the number of ways this can be done is
.
Since the two groups are similar, there is no differentiation between them. Therefore, we need to divide it with .
The total numbers of ways:
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