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Mathematics, 14.02.2020 05:27 gursparks
. Javier needs to exchange a dollar bill for
coins. The cashier has 2 quarters, 10
dimes and 10 nickels. We are asked to
determine how many possible
combinations of coins Javier could get
back if he must get back at least one of
the quarters.
Let’s start by assuming he uses only 1
quarter.
D N
7 1
6 3
5 5 That’s 5 combinations.
4 7
3 9
Now, assume he’s going to get both
quarters.
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Answers: 2
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. Javier needs to exchange a dollar bill for
coins. The cashier has 2 quarters, 10
dimes...
coins. The cashier has 2 quarters, 10
dimes...
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