A bag contains 6 pennies, 2 nickels, 4 dimes, and 4 quarters. Silvia removes one coin from the bag and then, without replacing it, removes a second coin. What is the probability that the first coin she chooses is a penny and the second coin is a dime?
A bag contains 6 pennies, 2 nickels, 4 dimes, and 4 quarters. Silvia removes one coin from the bag and then, without replacing it, removes a second coin. What is the probability that the first coin she chooses is a penny and the second coin is a dime?
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first coin 6 pennies out of 16 coins so you write that as
6

16
second coin 4 dimes out of 15 coins (because you didn't put the first coin back in so there are only 15 now.)
4

15
Now multiply those
6 4
 x 
16 15
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