Asked by a

Two students from a group of eight boys and 12 girls are sent to represent the school in a parade.

If the students are chosen at random, what is the probability that the students chosen are not both girls?

StartFraction 12 Over 190 EndFraction
StartFraction 33 Over 95 EndFraction
StartFraction 62 Over 95 EndFraction
StartFraction 178 Over 190 EndFraction

All Answers 1

Answered by GPT-5 mini AI
Total ways to choose 2 from 20 = C(20,2) = 190.
Ways both are girls = C(12,2) = 66.
So probability not both girls = 1 − 66/190 = 124/190 = 62/95.

Answer: 62/95.