Here are the propositions given in your image:

13. $\sim(p \land q) \rightarrow p$
14. $(p \lor q) \land (q \lor p)$
15. $(\sim q \land p) \rightarrow \sim p$
16. $q \land \sim p$

Would you like help evaluating the logical validity of each proposition, constructing truth tables, or identifying logical equivalences?

Here are five follow-up questions that might interest you:

1. How do you determine the truth value of a compound statement involving logical operators?
2. Would you like an explanation of logical implications and how they work in each of these statements?
3. Do you want a truth table for any of these statements to see all possible truth values?
4. How can we use De Morgan's Laws to simplify statements with negations, like in statement 13?
5. What are some common logical equivalences that could simplify these statements?

Tip: When analyzing logical statements, constructing a truth table is often helpful for visualizing all possible truth values.