A can solve 90% of the problems given in a book and B can solve 70%. What is the probability that at least one of them will solve a problem, selected at random from the book?

A can solve 90% of the problems given in a book and B can solve 70%. W

1.	A can solve 90% of the problems given in a book and B can solve 70%. What is the probability that at least one of them will solve a problem, selected at random from the book?
A.	0.16
B.	0.69
C.	0.97
D.	0.20
Answer» D. 0.20

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A can solve 90% of the problems given in a book and B can solve 70%. What is the probability that at least one of them will solve a problem, selected at random from the book?

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