AI-Verified Solution
421 views
There are three light switches outside a room and one lamp inside. You can enter once. How do you find the lamp’s switch?
Answer
Turn on #1, wait, turn it off; turn on #2; enter—on = #2, warm off = #1, cold off = #3
Explanation
Use heat test: on #1 then off; #2 on; enter—on = #2, warm off = #1, cold off = #3.
Want a deeper explanation? Ask our AI 👇
Similar Problems Explained
Short, helpful videos that explain similar problems
Skills You Achive
Experiment design
deduction
Related Questions
- What’s the difference between nominal and real GDP? | Edusolver
- How many times do a clock’s hands overlap in 12 hours? | Edusolver
- When does 11 + 3 = 2? | Edusolver
- What’s the break-even point? | Edusolver
- What is 25% of 80? | Edusolver
- A country’s GDP grows 3%, population 2%. What’s real GDP per capita growth? | Edusolver
- If 3 cats catch 3 mice in 3 minutes, how long for 100 cats to catch 100 mice? | Edusolver
- If total cost = fixed cost + variable cost, what happens to average cost when output rises (fixed cost constant)? | Edusolver
Comments (0)
Please to leave a comment.