At any given football game that burbank plays , the probability that patrick plays during the first half of the game is 5/6 . he plays during the first half, there is only a 3/7 chance that he'll play again during the second half. (he gets tired if he plays all out in the first half.) if he doesn't play during the first half, there is a 5/ 7 chance that he'll play during the second half . find the probability that patrick played in the first half, given that he played in the second half.