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5..Lisa and Laura independently attempt to solve a puzzle. The probability that Lisa can solve it is 0.9. The probability that Laura can solve it

5..Lisa and Laura independently attempt to solve a puzzle. The probability that Lisa can solve it is 0.9. The probability that Laura can solve it is 0.8. (Hint: Draw a picture.)

(a) What is the probability that the puzzle does not get solved? (Hint: Draw a picture.)

(b) What is the probability that exactly one of them (but not both) solves the puzzle? (Hint: In the picture, identify various disjoint parts.)

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