Eliminate before you pick
Each question has four options. Rule out the ones you are sure are wrong first; even removing one improves your odds from one in four to one in three. Look for options that are clearly the wrong kind of answer, such as a person where a place is asked for.
Read the whole question
The wording often carries the clue. “Which is the largest hot desert” is a narrower question than “largest desert”, and “first President” points to a specific person. Check what unit, date or category the question is asking for before you look at the options.
Use what you know from each category
Each day covers five different areas, so you rarely need to know everything about one subject. If a Sport question stumps you, remember that your score is out of five and move on without losing time on it.
Answers are final, so keep your streak
You get one attempt a day, and each answer is checked as soon as you choose it. Finishing all five counts toward your daily streak, whatever your score, so even a hard day is worth completing.