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marusya05 [52]
2 years ago
10

There are 5 chemistry, 6 physics, and 7 math teachers in a school. if 3 teachers are selected randomly, find the probability tha

t at least one is a math teacher.
Mathematics
1 answer:
mrs_skeptik [129]2 years ago
6 0
77.2%

To find the probably and at least on you must find the probability of none and subtract from one.

The probability of none can be found like so:

(5+6 over 5+6+7)^3 = .228

1 - .228 = .772

Hope this helps!
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