There’s no real coding exercise in 27 and 28, it’s more math symbols and true false from algebra classes. If you have not taken any algebra classes, this is a good review on logic operators and symbols.
The symbols are <= (less than or equal to), >= (greater than or equal to, > (greater than), < (Less than).
Rules for boolean, Anything with false in AND boolean is false, anything true with or boolean is TRUE. This works in math logics, but keep in mind, there are weird situations in programming. It’s like one of those things you learn in elementary and find out they are not entirely true in higher educations.