Question

20. Mr. Lewinger has to choose 2 students to

lead the class field trip. If he draws from a
list of 6 boys and 6 girls, what is the
probability that the names of 2 girls will be
drawn?
A.5/24
B.5/22
C.1/7
D.5/6

Answer 1

B. 5/22

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Total number of students is:

• 6 + 6 = 12

Probability of a first girl is 6 of 12:

• girls / total = 6/12 = 1/2

Probability of a second girl is 5 of 11 since both numbers reduced by one:

• girls / total = 5/11

Probability of the two events is:

• 1/2*5/11 = 5/22

Correct choice is B.