Mary-Anne has five cherry lollipops, two apple lollipops, three banana lollipops, and six pina colada lollipops. How many ways can she select four lollipops?
Here is my attempt at this. Somebody should check it!
A=Apple, B=Banana, C=Cherry, P=Pina Colada
{A, A, B, B} | {A, A, B, C} | {A, A, B, P} | {A, A, C, C} | {A, A, C, P} | {A, A, P, P} | {A, B, B, B} | {A, B, B, C} | {A, B, B, P} | {A, B, C, C} | {A, B, C, P} | {A, B, P, P} | {A, C, C, C} | {A, C, C, P} | {A, C, P, P} | {A, P, P, P} | {B, B, B, C} | {B, B, B, P} | {B, B, C, C} | {B, B, C, P} | {B, B, P, P} | {B, C, C, C} | {B, C, C, P} | {B, C, P, P} | {B, P, P, P} | {C, C, C, C} | {C, C, C, P} | {C, C, P, P} | {C, P, P, P} | {P, P, P, P} (total: 30)
