In how many ways can a committee of 2 be chosen from 6 students?
Answer and explanation
Correct answer: D. 15
- Step 1: The order does not matter, so use combinations: 6C2 = 6! / (2! x 4!). Step 2. = 15. Answer: 15. Why not the others: 30: That counts ordered selections. 12: That multiplies the two numbers. 720: That arranges all the students in a row.
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