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Question
If B = {2, 3, 5, 6, 7} determine the truth value of
∃ n ∈ B, such that n + 6 > 12.
Solution
For n = 7, n + 6 = 7 + 6 = 13 > 12
∴ n = 7 satisfies the equation n + 6 > 12.
∴ The given statement is true.
∴ It’s truth value is T.
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