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Question
Let R be a relation on the set N given by
R = {(a, b) : a = b − 2, b > 6}. Then,
Options
(2, 4) ∈ R
(3, 8) ∈ R
(6, 8) ∈ R
(8, 7) ∈ R
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Solution
(6, 8) ∈ R
Then,
a = b - 2
⇒ 6 = 8 - 2
and b = 8 > 6
Hence, (6, 8) ∈ R
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