45 pennies, 1 quarter, 2 dime,2 nickle
http://www.chacha.com/question/whatis50coinsth...

12. There are 4 ways of choosing the first coin, leaving 3 coins from which to make the second choice. The number of combinations is therefore 4 x 3 = 12.
http://wiki.answers.com/Q/In_how_many_ways_an_two_...

You can use five quarters and five nickels, or four quarters, four dimes and two nickels. If you use fewer than four quarters, you can't get $1.50.
http://answers.yahoo.com/question/index?qid=201111...

63. Because 7 * 4 = 28, I must make four purchases at $3.84, or $15.36 total. To get the smallest amount of coins, use the largest value (quarters) for as long as you can. In each
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