(a) Use the rules of inference to deduce the conclusion from the premises for the following argument form:

r,

p r,

s q r, < This is the line where I'm getting confused, not used to using rules of inference with 2 'v' statements in one line. (please explain your working)

p q,

s.

(b) Use logical equivalences to show that:

(p q) p t. I'm getting confused by the conditional statements here. Could you please solve and show working. Thanks