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dybincka [34]
3 years ago
6

A bridge hand is made up of 13 cards from a deck of 52. Find the probability that a hand chosen at random contains at least 3 ni

nes.
Mathematics
1 answer:
vovikov84 [41]3 years ago
4 0
A deck of 52 hours has 4 nines.
P ( x ≥ 3 ) = ( 48 C 10 · 4 C 3 ) / ( 52 C 13 ) + ( 48 C 9 · 4 C 4 ) / ( 52 C 13 ) =
= 0.0412 + 0.588 = 0.1  
Answer:
The probability is 0.1 ( or 10%).
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