Math Puzzle AnswerEveryone has a photographic memory. Some don't have film.
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Math Puzzle Answer

This is the solution to one of our math puzzles. There are several other puzzles for you to try to figure out. Please click to find all our math puzzles.

 

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Sunless in Seattle - Answer

The probability of the sun shining on at least 4 out of 5 days is 11/243.

The probability of 5 sunny days is (1/3)[superscript 5] = 1/243.

The probability of 1 cloudy day and 4 sunny days is (2/3) (1/3)4[superscript 4] = 2/243. There are 5 ways this can occur.

The probability of sun on at least 4 out of 5 days is then 1/243 + 5(2/243) = 11/243.

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