Does anyone know how to move from the mid 600s to 700s. I’m stuck on these level 5 questions, sometimes i can grind through them but most of the time i have no idea what to do.
- Read carefully and interpret the question exactly as written.
- None of the questions (even level 5) should require excessive brute force. If you find yourself "grinding through them" and taking too long to solve, there is probably a simpler, more clever way.
- Sometimes, plugging in the answer choices or random numbers is a fast strategy. But I wouldn't recommend doing this too often.
- It may help to learn some basic combinatorics and number theory (if you haven't already), since these subjects are not usually taught well in school. Some of the level 5 questions might clue you in to list all the possibilities, but this can be avoided.
Thank you for the tips!