Practice GMAT Problem Solving Question

Return to the list of practice GMAT problem solving questions.

rss
If n # z = n2 - nz - 2(z-2)n for integers n and z, what is the value of 2#2?
Correct Answer: D
  1. Plug in n = 2 and z = 2
  2. Evaluate the expression:
    n # z = n2 - nz - 2(z-2)n
    2 # 2 = 22 – 22 – 2(2-2)2
    = 4 – 4 – 2(0)2
    = 4 - 4 - 0 = 0 – 0 = 0

Return to the list of practice GMAT problem solving questions.