Ms. Washington has 18 students in her class. She wants to send 3 of her students to pick up books for the class. How many combinations of students can she choose? Question 10 options:

This is a concept of combination, the question requires us to find out how many combinations of students a teacher can choose if she sends 3 of her student to pick up books for the class. Since there is no specific order in selection, the combination will be given by:

nCr

n=Total number of the sample

r=number of students o be selected

thus the combination will be:

18C3

=816

This implies that there are 816 ways in which the Ms Washington can select the students