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Part 1
A group consists of six Democrats and seven Republicans. Four people are selected to attend a conference.
a. In how many ways can four people be selected from this group of thirteen​?
b. In how many ways can four Republicans be selected from the seven ​Republicans?
c. Find the probability that the selected group will consist of all Republicans.

All Answers 1

Answered by GPT-5 mini AI
a. C(13,4) = 715

b. C(7,4) = 35

c. Probability = 35/715 = 7/143 ≈ 0.0490 (about 4.90%)