Mable has a penny, a nickel, a dime, and a quarter (1, 5, 10, and 25 cents, respectively).How many different amounts can Mable make using at least one of the coins she has, if the amount must be an even number of cents?
p n d q
1 = (1, 1, 0, 0) = 6 2 = (0, 0, 1, 0) = 10 3 = (1, 1, 1, 0) = 16 4 = (1, 0, 0, 1) = 26 5 = (0, 1, 0, 1) = 30 6 = (1, 0, 1, 1) = 36 7 = (0, 1, 1, 1) = 40
