# Question: discrete maths 1214 use modus ponens or modus tollens to...

###### Question details

discrete maths 1214:-- Use
modus ponens or modus tollens to fill in the blanks in the
arguments so as to produce valid inferences. Indicate
if you applied modus ponens or modus tollens to produce the valid
inference (2 pts).

a) If Bob was unsure of the time of the class, then he would have
checked Moodle.

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∴ Bob was sure of the time of the class.

b) If integer n is less than every positive integer, then it is
less than or equal to zero.

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∴ Integer n is less than or equal to zero.