Posted by **Shawn** on Wednesday, September 15, 2010 at 10:41pm.

selecting three (3) coins, but assume that there are 5 dimes, 4 nickels, and 2 quarters.

In how many possible ways can the selection be made so that the value of the coins is at least 25 cents?

- math -
**Reiny**, Wednesday, September 15, 2010 at 10:58pm
The only possible cases are, hope I did not miss any

DDD - 30

DDN - 25

DDQ - 45

DNN - 20

DNQ - 40

DQQ - 60

NNN - 15

NNQ - 35

NQQ - 55

How many of these amount to at least 25 cents?

(notice that the fact that we have 5 dimes and 4 nickels is of no consequence, since we can use at most 3, but the 2 quarters limits the cases)

## Answer This Question

## Related Questions

- Math - Select three (3) coins, but assume that there are 4 dimes, 4 nickels, and...
- math - Three coins are selected from 10 coins: 4 dimes, 4 nickels, and 2 ...
- Math - Assume that you have 7 dimes and 5 quarters (all distinct), and you ...
- math - Jo has 37 coins (all nickels, dimes and quarters) worth $5.50. She has 4 ...
- math - When a child breaks open her piggy bank, she finds a total of 76 coins, ...
- Math - Tammy wants to get change for 30 cents. The only coins she can get are ...
- Algebra - A coin collection contains 30 coins in nickels, dimes, and quarters. ...
- Math - Ruthie has 10 coins, all either nickels, dimes, or quarters. She has N ...
- Algebra - Nadia has 32 coins made up of nickles, dimes, and quarters. The sum of...
- Algebra - Nadia has 32 coins made up of nickles, dimes, and quarters. The sum of...

More Related Questions