20 multiple-choice questions in College Board exam style. Each has four choices and a full explanation of why each option is right or wrong.
Don't confuse the money market with the loanable funds market. Money market = nominal rate, vertical money supply set by the Fed. Loanable funds = real rate, both curves can shift.
Open market purchases increase the money supply; sales decrease it. Many questions test this direction directly.
The money multiplier (1 ÷ reserve ratio) gives a maximum, theoretical expansion — watch for questions that test whether you know this is a ceiling, not a guarantee.
Read the explanations even when you got it right. Each one teaches a small fact that often returns in a different form on the exam.