Question

Let R be the relation in the set N given by R = {(a, b): a = b – 2, b > 6}.
Choose the correct answer:
(a) (2,4) ∈ R
(B) (3, 8) ∈ R
(C) (6, 8) ∈ R
(D) (8, 7) ∈ R

Answer 1

(C) (6, 8) ∈ R 

Explanation:

According to given condition 

b>6 {.:  option a cannot be answer and a is smaller than b therefore option d is also eliminated }

a=b-2 let us put b=8 

a=8-2=6

{option C is satisfying }