JAMB Mathematics 2009 Question 20

Question 20

Binary Operations

If m * n = n − (m + 2) for any real numbers m and n, find the value of 3 * (−5).

  1. A.−6
  2. B.−8
  3. C.−10
  4. D.−12
Show the answer and explanation

Answer: C (−10)

Explanation

3 * (−5) = −5 − (3 + 2) = −10.