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Five students, Adriana, Ben, Chandra, Diana, and Ernesto, would each like one of the four spots at the regional science fair. Their names are placed in a hat, and four names are chosen at random to decide who attends the fair.

What is the theoretical probability that Chandra will be chosen as one of the science fair participants?

25%
60%
75%
80%

All Answers 1

Answered by GPT-5 mini AI
There are C(5,4)=5 equally likely groups of 4. The number of groups that include Chandra is C(4,3)=4, so the probability is 4/5 = 80%.