Question

Stillwater Junior high divides students into teams taught by a group of teachers. The table shows the number of students in each team.

The principal uses a computer to randomly select the name of a student from all the students in the school. With the computer program, it is possible to draw the name of the same student twice. If the principal selects the name of a student from the Voyagers on the first try, what is the probability she will draw the name of another student from the Voyagers on the second try?

A. 81/399
B. 41/200
C. 1/82
D. 21/100

Answer 1

(A)81/399

Explanation:

The probability that the Principal selects a voyager on the first try is

82/400

Since another student is to be selected, the total population has reduced by 1 and the number of voyagers has been reduced by 1.

Probability that another voyager is selected on the second try is

81/399

The correct answer is A.