Question

A teacher wants to sent 5 students to the library each day. There are 22 students in the class. How many ways can she choose 5 students to go to the library on the first day?

Answer 1

There are 26 334 ways.

Explanation:

Using Combination Rule because the question say choosing 5 students to go where the arrangement or order does not matters.

22C5 = 26 334

*nCr, n is a number of objects and r is the number of spaces/seats

(Correct me if I am wrong)

Answer 2

4 leaving 2 students that haven't went.

Explanation:

5 times 4 equals 20. 22 minus 20 equals 2.