Homework Help: math

Posted by Anonymous on Sunday, January 17, 2010 at 8:41pm.

Your mom is a sporting person, so when it's close to your bedtime, she will have a contest with you to see if you get to stay up an extra half-hour to play a computer game. You get to draw a card from a well-shuffled deck. If you draw a face card, an ace, or any heart, she'll "have a heart" and let you stay up. If you draw any other card, you lose and go ahead to bed. Who has the best chance of winning, you or your Mom?

math - Reiny, Sunday, January 17, 2010 at 8:51pm
hearts = 13
aces = 4
face cards = 12
total = 29
but we counted AH, JH, QH, KH, twice
so the actual count = 29-4 = 25

prob(staying up) = 25/52
prob(going to bed) = 1 - 25/52 = 27/52

so what do you think?
math - sheridan, Saturday, February 12, 2011 at 12:08pm
mom has a higher chance of winning

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