Python – Boolean Expressions

I do not understand how to read the questions?

1a. all the values ​​(p, q, r) are false then (p and q) or not r =? 1b. not (p and (q or not r)) =?

2b. p = false, q = true, r = true then (p and q) or not r =?
2b. no (p and (q or not r))