Choose one, two, or three topics. They are grouped the same way as on the homepage: calculus, differential equations, complex numbers, geometry, probability, and physics. Once three are selected, the others stay locked until you clear one.
A chapter list appears when exactly one topic is selected. Leave it on All chapters to draw from that whole topic, or pick one chapter and every question comes from that chapter. With two or three topics, questions are taken from each topic as a whole and split evenly across them.
Difficulty and how many problems
Choose Any, Easy, Medium, or Hard. Any keeps every difficulty in the topics you selected. Then choose a length of 5, 10, 15, or 20 problems.
The form shows how many problems match those choices. A length larger than that pool is turned off. If fewer than five problems match, widen the difficulty or pick another topic or chapter. Generate test draws a random set of that size. New random set draws a different set from the same choices.
Statements only, until you are done
The test lists the statements. Each question has Mark as attempted. That reveals View solution for that question alone, and the solution opens on its own page with a link back to this test. I’m done reveals View solution on every question. Choose it again and the solutions hide.
A progress line shows which question is on screen and how many you have marked attempted. Print / save PDF prints the statements as an exam sheet. Copy test link copies an address that opens the same questions again. Attempted marks for that set stay in this browser.