A problem by Ramin Taghizada
Level
pending
Out of a usual deck of 52 cards,fi rst a card is randomly selected and given to your mate. Then another card is randomly selected and given to you. The probability( a/b )that your card is an ace .Compute the sum of a and b (coprime ).
The answer is 14.
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1 solution
4/52 3/51+48/52 4/51=1/13 so,1+13=14