Question 14
Nine identical white balls and three identical black balls are arranged in a row. No two black balls may be adjacent. How many arrangements are possible?
Original printed choices: A: 6; B: 4; C: 3; D: 5.
Editorial format: answer directly; the printed choices are retained for source fidelity. See the solution for the source issue.
Original printed choices: A: 6; B: 4; C: 3; D: 5.
Editorial format: answer directly; the printed choices are retained for source fidelity. See the solution for the source issue.