Practice: Comparisons and Boolean Logic

Twelve short problems, each built around one comparison or one way of joining them. They go from single operators — equal, not equal, less than — to ranges and conditions with two parts.

Before you write a condition, say it out loud:

• "and" means &&, "or" means ||, "not" means !.
• Between 10 and 20 is two tests: n >= 10 && n <= 20. Never 10 <= n <= 20.
• Included means >= or <=; strictly means > or <.

Then check it against one value that should pass and one that shouldn't — and one sitting exactly on the edge.