4. On a questionnaire, a respondent must choose 3 of the 5 questions presented. How many different combinations of 3 questions can the respondent possibly choose? (A) 10 (B) 15 (C) 20 (D) 30 (E) 60
Added by Willie C.
Close
Step 1
Step 1: Calculate the number of combinations of 3 questions that can be chosen from a total of 5 questions using the combination formula: nCr = n! / r!(n-r)! Show more…
Show all steps
Your feedback will help us improve your experience
Sri K and 69 other Calculus 3 educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Gregory H.
A multiple-choice test consists of 15 questions, each permitting a choice of three alternatives. In how many different ways can a student check off her answers to these questions?
A candidate is required to answer 6 out of 10 questions which are divided into two groups, each containing 5 questions. He is not permitted to attempt more than 4 questions from either group. The number of different ways in which the candidate can choose six questions is (a) 50 (b) 150 (c) 200 (d) 250
Recommended Textbooks
Calculus: Early Transcendentals
Thomas Calculus
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD