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There are 5 boys and 6 girls in a class.  A committee of three students is to be made such that there is a boy and a girl on the comittee. In ho w many ways can the committe be selected?

 Dec 3, 2019
 #1
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Let's make sure that there is at least one boy and one girl on the comittee. So far we can have 5*6 possibilities

Then we can choose any of the 9 other people

Calculate 5*6*9 to get the answer.

 

You are very welcome!

:P

 Dec 3, 2019

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