Burt Baskin and Irv Robbins began making ice cream in 1945.
Initially they developed 31 flavors-one for each day of the month. (Source: Baskin- Robbins)
a) How many 2-dip cones are possible using the 31 original flavors if order of flavors is to be considered and no flavor is repeated?
b) How many 2-dip cones are possible if order is to be considered and a flavor can be repeated?
c) How many 2-dip cones are possible if order is not considered and no flavor is repeated?