SOLUTION: i have 4 us coin in my pocket. what is the chance that i have less than 30cents .assume coins are random assume i have no 50 cents or $1 coin

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Question 908107: i have 4 us coin in my pocket. what is the chance that i have less than 30cents .assume coins are random assume i have no 50 cents or $1 coin
Answer by JulietG(1812) About Me  (Show Source):
You can put this solution on YOUR website!
Your choices are Quarter, Dime, Nickel, Penny
Q Q Q Q
Q Q Q D
Q Q Q N
Q Q Q P
Q Q D D
Q Q D N
Q Q D P
Q Q N N
Q Q N P
Q Q P P
Q D D D
Q D D N
Q D D P
Q D N N
Q D N P
Q D P P
D D D D
D D D N
D D D P
D D N N = .30
D D N P = .26
D D P P
D N N N
D N N P
D N P P
D P P P
N N N N
N N N P
N N P P
N P P P
P P P P