Test the validity of each argument: If it rains. Erik will be sick, It did not r

Question

Test the validity of each argument: If it rains. Erik will be sick, It did not rain. Erik was not sick If it rains, Erik will be sick. Erik was not sick. It did not rain. Test the validity of the following argument: If I study, then I will not fail mathematics, If I do not play basketball, then I will study. Bui I failed mathematics. Therefore I must have played basketball. Let A (1, 2, ..., 9, 10). Consider each of the following propositional function, determine its truth value. If it is a propositional function, determine its truth set. (Forall x A) (y A) (x +y

Explanation / Answer

4.23

a. Is Wrong. Eric can be sick because of any other reason also.
b. Right conclusion

4.24.

He did not study ( because he failed in maths)
He studied , then he played basketball
Hence this is right

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