can anybody explain me. What this code explaining here. I can not understand. Thank you so much in advance

Hi there, Monika Kesarwani ! Let's break this down a bit into bite-sized chunks. But before we proceed it's important to understand the difference between AND and OR. In an AND statement, both parts must be true for the entire thing to be true. In an OR statement, both may be true, but at least one must be true for the whole thing to be true.

So we start with this:

(!true || !false) && (true && !false)

Now the ! means to reverse the truthiness of that so !true becomes false and !false becomes true. Much like we do with arithmetic, we do the things in parentheses first. Let's start by looking for anything with a ! and reverse its truthiness in place.

(!true || !false) && (true && !false)
// after looking for ! and reversing truthiness
(false || true) && (true && true)

Ok so now that we've gotten the ! out of there, we can start working on the evaluations inside the parentheses:

//The first parentheses contain an OR. Only one has to be true for it all to be true
(true) && (true && true)

// The second parentheses contain an AND. BOTH have to be true for it to be true (which they are)
(true)  && (true)

// Now we're left with one AND statement and both are true
true && true

Thus, the evaluation of this is true. In our last step, we had true AND true. If both are true, then the evaluation is true.

Hope this helps!