SOLUTION: what is the possibility of picking two different months that begin with the same letter of the alphabet.

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Question 534315: what is the possibility of picking two different months that begin with the same letter of the alphabet.
Answer by Edwin McCravy(20060) About Me  (Show Source):
You can put this solution on YOUR website!
There are only 5 pairs of months that begin with the same letter:

{April, August}, {January, June}, {January, July}, {June, July}, {March, May}

There are C(12,2) = %2812%2A11%29%2F%282%2A1%29 = 66 month pairs altogether,

So the probability is 5 out of 66 or 5%2F66.

Edwin