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On each of the first three days of January, there is a 1/3 chance that it will snow where Bob lives. On each of the next four days, there is a 1/4 chance that it will snow. What is the probability that it snows at least once during the first week of January

 Feb 7, 2020
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Chance that is DOESN't snow    2/3  x 2/3 x 2/3 x 3/4 x 3/4 x 3/4 x 3/4   = 8/27 x 81/256   = 648/6912

 

1 - 648/6912 = 6264/6912 = 29/32 chance of snow   (??)

 Feb 7, 2020

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