How many ways are there to select 6 cookies from 20 varieties: a. if no two...

Question

Question

How many ways are there to select 6 cookies from 20 varieties:

a. if no two cookies have the same variety?

b. if all cookies are of the same variety?

c. half of the cookies are from one variety and the other half are from another variety?

d. if 3 cookies are from one variety, 2 cookies from another variety, and 1 cookie from another variety?

Discrete Mathematics Counting, Combinations and Permutations

Answer 1

Answer #1

Since there are 20 varieties of cookies and we have to select 6 cookies.

Number of ways of selecting will depend only upon the number of varieties of cookies we are selecting but not on number of particular type cookie.

Answer 2

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