SOLUTION: The probability that Andy studies math over break is 0.3 and the probability that Betty independently studies over break is 0.4. Find the probability Andy studies math over break

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Question 92277: The probability that Andy studies math over break is 0.3 and the probability that Betty independently studies over break is 0.4. Find the probability Andy studies math over break and Betty doesn't.
Answer by Nate(3500) About Me  (Show Source):
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The probability that Andy studies math over break is 0.3
The probability that Betty independently studies over break is 0.4
Prob of not studying ~> 0.6
P(Andy Studies) and P(Betty Doesn't Study)
0.3 * 0.6 = 0.18