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A local food bank surveys 100 of their volunteers. They find that 87 of them have...

A local food bank surveys 100 of their volunteers. They find that 87 of them have children. 51 of them have at least one grandchild. 31 of them have more than one grandchild.

What is the probability a volunteer chosen at random a) has a child? b) has exactly one grandchild? Be sure to explain your reasoning.

Math   Statistics-And-Probability   
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