JAMB Mathematics 2017 Objective — Question 3
Question 3 of 40 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2017 Objective paper, with the correct answer and a full explanation.
Advertisement
A binary operation on the set of real numbers is defined by x * y = (x+y)/z for all x,y ∈ R. Find 7*5.
- A. A. 8
- B. B. 9
- C. C. 5
- D. D. 6Correct
Explanation
x*y=(x+y)/2 = (7+5)/2 = 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.