Thinking Skills
Owen, Paz and Quinn each have 22 beads. They take turns: even means give that many to each of the other two; …
Question 1 · Multiple choice
Question
Owen, Paz and Quinn each have 22 beads. They take turns: even means give that many to each of the other two; odd means receive that many from each. Owen spins 4. Paz spins 1. If they end with 15, 30 and 21, what did Quinn spin?
Options
- A. 1
- B. 2
- C. 3
- D. 4
Correct answer
B. 2
Explanation
After Owen 4 (even, gives 4): Owen 14, Paz 26, Quinn 26. After Paz 1 (odd, receives 1): Owen 13, Paz 28, Quinn 25. We need (15, 30, 21). Quinn must go from 25 to 21 (lose 4). Losing 4 means he gave 2 to each, so he spun a 2.