Wednesday, September 29, 2010

Probability Card Trick From Scam School



Just for fun, from Scam School. A simple probability trick. Given 1 deck of 52 cards. There are
a) 12 face cards ( 4 suits of J, Q, K)
a) 40 non-face cards ( 4 suits of 1, 2, ... 9)

Shuffling and separating the deck into 3 pile of cards, what are the odds of getting any face card at the top of the 3 piles? Without thinking, most people believed the chances are lower than chances of all face cards since there are so few face cards. However, the calculation shows otherwise:

Chnaces of getting at least 1 face card in 3 piles
= 1 - Chances of getting all face card
= 1 - (40/52 * 39/51 * 38/50)
= 0.552941176

Therefore, it is slightly more likely to get at least 1 face card due to probability.

Related Posts by Categories

2 comments:

Albina N muro said...

Probability card trick tutorial inspired by Mismag822, learn it and ... 5:43 Response: Scam School Small Risk, HUGE Reward Magic Trick by singingbanana. gold ira company

Jade Graham said...

including rising existing home sales and lower weekly jobless claims. Bullion investors focused on U.S. gold ira investment reviews