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6 July, 16:41

Dianna has 4 quarters, 3 dimes, and 3 nickels in her purse. She reaches into her purse and randomly grabs two coins, one at a time. What is the probability of first picking a dime and then, without replacing it, selecting a nickel?

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  1. 6 July, 18:30
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    At the beginning there are 3 dimes out of 10 coins:

    P (first coin is a dime) = 3/10

    After that there are 3 nickels out of 9 remaining coins:

    P (second coin is a nickel) = 3/9 = 1/3

    P (dime, then nickel) = P (first coin is a dime) x P (second coin is a nickel)

    = 3/10 x 1/3

    = 1/10

    Answer:

    1/10. if im wrong im sorry
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