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Question

In a class, 40% of the students study math and science. 60% of the students study math. What is the probability of a student studying science given he/she is already studying math?

A
0.43
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B
0.4
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C
0.67
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D
0.6
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Solution

The correct option is C 0.67

P(MandS)=0.40

P(M)=0.60

P(S|M)=P(MandS)P(S)=0.400.60=23=0.67


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