Question

Which of the following is a counter example of the statement? If 2n + 4 < 20. then n < 6.
A. If n = 5, 2n + 4 < 20 is true.
B. If n = 7, 2n + 4 < 20 is true.
C. If n = 10, 2n + 4 < 20 is false.
D. If n= 20, 2n + 4 < 20 is false.

Answer 1

I the statement were true when n=7 that contradicts the assumption that n<6

Answer 2

so B.