Question

Zandra went into a candy store to buy jelly beans. She wanted to choose 3 flavors from 12 flavors they sold. How many combinations of 3 flavors could she make

Answer 1

220 ways

Explanation:

Total number of flavors (n) = 12

Number of flavors to combine (r) = 3

Recall:

nCr = n! ÷(n-r)! r!

nCr = 12! ÷ (12 - 3)!3!

nCr = 12! ÷ 9!3!

nCr = (12 * 11 * 10) / (3 * 2 * 1)

nCr = 1320 / 6

= 220 ways