Solve the problem using Bayes' Theorem. Round the answer to the nearest hundredth, if necessary.For mutually exclusive events X1, X2, and X3, let P(X1) = .50, 
and 
Also, 
P(Y|X2) = .30, and P(Y|X3) = .60. Find P(X2|Y).
A. .42
B. .48
C. .31
D. .21
Answer: D
Mathematics
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Solve.There are currently 78 million cars in a certain country, decreasing by 3.1% annually. How many years will it take for this country to have 67 million cars? Round to the nearest year.
A. 5 yr B. 77 yr C. 4 yr D. 3 yr
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Find the missing monomial, factor or term.-6x5 ? ? = -54x8
A. -9x3 B. x3 C. 15x3 D. 9x3
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Multiply and simplify.
? 
A. - 
B. 1
C. 
D. 
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Use the Venn diagram below to find the number of elements in the region.
n(A ? C)
A. 2 B. 18 C. 10 D. 37
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