JAMB Mathematics 2020 Objective — Question 31
Question 31 of 40 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2020 Objective paper, with the correct answer and a full explanation.
Advertisement
For what value of n is C(n+1,3) = 4 x C(n,3)?
- A. 4
- B. 6Correct
- C. 3
- D. 5
Explanation
Solving the combination equation C(n+1,3)=4C(n,3) gives n=6.
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.