SOLUTION: Probability game: A bowl has 10 pennies, 20 nickels, and 35 dimes, and 40 quarters. A coin is picked and is put back in the bowl. Another coin is picked after the coins were mixed

Algebra ->  Probability-and-statistics -> SOLUTION: Probability game: A bowl has 10 pennies, 20 nickels, and 35 dimes, and 40 quarters. A coin is picked and is put back in the bowl. Another coin is picked after the coins were mixed       Log On


   

Question 1061829: Probability game: A bowl has 10 pennies, 20 nickels, and 35 dimes, and 40 quarters. A coin is picked and is put back in the bowl. Another coin is picked after the coins were mixed in the bowl. what is the probability that both coins are dimes?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Probability of a dime is,
P%28D%29=35%2F%2810%2B20%2B35%2B40%29=35%2F105=1%2F3
So then,
P%28DD%29=P%28D%29%2AP%28D%29=%281%2F3%29%281%2F3%29=1%2F9