SOLUTION: Sean tells Moira that he has less than 50 cents in American coins in his pocket and no two coins of the same denomination. How many possible total amounts could be in Sean�s pock

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Question 1022015: Sean tells Moira that he has less than 50 cents in American coins in his pocket and no two coins of the same denomination. How many possible total amounts could be in Sean�s pocket?
Answer by CubeyThePenguin(3113) About Me  (Show Source):
You can put this solution on YOUR website!
P = penny, N = nickel, D = dime, Q = quarter

1 coin: P, N, D, Q
values: 1, 5, 10, 25

2 coins: PN, PD, PQ, ND, NQ, DQ
values: 6, 11, 26, 15, 30, 45

3 coins: PND, PNQ, PDQ, NDQ
values: 16, 31, 36, 50 (omit the last one)

unique total amounts: 13