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There are 20 students in the cast and crew of the school play. any group of 7 or more of these stude...
5 months ago
Q:
There are 20 students in the cast and crew of the school play. any group of 7 or more of these students must contain at least 1 boy. what’s more, any group of size 15 must contain at least 1 girl. how many boys are working on the play?
Accepted Solution
A:
There will be 3 boys working on this play.