Question

you have one penny one nickel one dime and one quarter. how many different amounts of money can you make using one or more of these coins ... please help..me..:(
bobpursley
P
PN
Pq
Pd
PND
PNQ
PDQ
PNDQ
QND
QD
QN
ND
N
D
Q
Are there any more?
shaheer
seven +eight=twelve
what is the answer without repeating