If B = {2, 3, 5, 6, 7} determine the truth value of ∃ n ∈ B, such that n + 6 > 12.

EXERCISE 1.5Q 2.2    PAGE 12
Exercise 1.5 | Q 2.2 | Page 12

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.


Mathematical Logic