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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?

 Nov 2, 2019
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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)

 Nov 2, 2019

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