A piggy bank contains 4 quarters, 18 dimes, 10 nickels, and 8 pennies. A coin is chosen at random, not replaced, then another is chosen. Find each probability. P (both dimes).
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about 0.196  

Step-by-step explanation:

4 + 18 + 10 + 8 = 40, this means that the piggy bank has 40 coins in total.  Probability of the FIRST coin being a dime is 18/40 and the probability of the SECOND coin being a dime too is 17/39. To find the answer you would multiply 18/40 x 17/39.

18/40 x 17/39 = 306/1560 = about 0.196  

Hope this helps :D

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