ⓘ
When off, at most one number will be 10 or larger (e.g. 15
+ 6 is allowed, 15 + 12 is not).
ⓘ
When off, problems always divide evenly. When on, problems
may leave a remainder.
ⓘ
Uses the Quiz Duration below and the number of questions
on your real test to show how many seconds you can spend
on each card. It's just a guide — nothing happens when it
runs out.