Posted by **overwhelmed** on Tuesday, June 21, 2011 at 10:09am.

I am having trouble knowing if I add or multiply with this problem:

Male Female

Age 19 and under 4746 4517

Age 20 1625 1553

Age 21 1679 1627

Choose one driver at random. Find the probability that the driver is Male and 19 or under.

Now, do I find the product of the number of males and the number of drivers 19 or under? Or do I add and subtract:

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