Question

Which of the following Illusions the truth value of given statements ? 5 is less than 7 or 7 is less than 12.

Answer 1

An OR statement (written $A \lor B$) is true if either one of the statements is true, or both. This is the truth table:

$\begin{array}{cc|c}T&T&T\\T&F&T\\F&T&F\\F&F&F\end{array}$

In this case, both statements are true, because 5 is indeed smaller than 7, and 7 is smaller than 12. This means that you're in the first row of the truth table, and so the correct option is the first.

Answer 2

It's the first answer it's true true