100 questions, built from the ground up — Pascal's Triangle, binomial coefficients, the general term, and finding specific terms — ending with genuinely hard application problems. Work through it once, honestly, and you'll own the unit.
Choose how long you want to work. The test locks and scores automatically when time runs out — or finish early whenever you're ready.
All 100 questions load on one scrollable page. Answer at your own pace — you'll see whether each choice is correct immediately, with a short explanation underneath.
Done, or ready to see your score early? You can finish anytime.
Only the questions you answered incorrectly appear below, with the correct answer and explanation. Skipped questions aren't shown here — go back and try them.