SOLUTION: A card is drawn from a deck of cards numbered one through twenty. The card is not replaced and another card is drawn. Find the probability of drawing two prime numbers in a row.

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Question 1176254: A card is drawn from a deck of cards numbered one through twenty. The card is not replaced and another card is drawn. Find the probability of drawing two prime numbers in a row.
Answer by ikleyn(52786) About Me  (Show Source):
You can put this solution on YOUR website!
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There are 8 prime numbers in the interval from 1 to 20 inclusive

    2 3 5 7 11 13 17 19


Therefore, the answer to the problem's question is  


      P = %288%2F20%29%2A%287%2F19%29 = %282%2F5%29%2A%287%2F19%29 = 14%2F95 = 0.1434 = 14.34%.     ANSWER

Solved, answered an explained.

The formula I used for the probability is SELF-EXPLANATORY.