What does this question mean? I am looking for some to explain what does this question want from me to do?
Determine all true value assignments, if any, for primitive statements
$p, q, r, s, t$ that make each of the following compound statements false.
Note: Do not answer this question by drawing truth tables. Study the compound
statements and THINK about the truth values of the primitive statements. Your
answers should be in English sentences.
a. $(p \land q) \land r \implies s \lor t$
b. $p \land (q \land r) \implies s \oplus t$ (where $\oplus$ means exclusive or)
Please note that I do not want the answer I want some one explains for me what does this question mean and what does it want from me?
This is my first math course. So consider that in mind!
 A: Let me illustrate what’s wanted by working a similar problem. Suppose that the same question were asked about the compound statement $(p\land q)\to (s\lor t)$. An implication $A\to B$ is false if and only if $A$ is true and $B$ is false, so you want to ask yourself under what conditions on $p,q,s$, and $t$ will $p\land q$ be true and $s\lor t$ false. In words, $p\land q$ is true precisely when $p$ and $q$ are both true, and $s\lor t$ is false precisely when $s$ and $t$ are both false. We conclude, therefore, that 

$(p\land q)\to (s\lor t)$ is false precisely when $p$ and $q$ are both true and $s$ and $t$ are both false.

As I read the question, this is the kind of answer that is wanted. Does that help?
A: Let's understand this with an example:
If $p,q,r,s,t$ are True then (a) is
(True and True and True)$\to$ (True or True)
which simplifies to 
True $\to$ True
which is a true statement. (b), on the other hand evaluates to 
(True and True and True)$\to$ (True xor True)
which simplifies to 
True $\to$ False
which is a false statement (rememeber the truth table of $\to$). 
You are asked to find all the values of $p,q,r,s,t$ such that (a) evaluates to True.
