Suppose there are three light switches outside a room. Inside is a single light bulb, controlled by one of the three switches. You need to determine which switch operates the bulb. You can turn the switches on and off as many times as you wish (they are all off to begin with), but may only enter the room once. There is no one there to help you. The door to the room is closed, and there are no windows, so you cannot see inside. How can you discover which switch operates the bulb?
Submitted by: AdministratorDo the following steps:
☛ 1. Turn ON two switches, and leave one OFF.
☛ 2. Wait a few minutes.
☛ 3. Turn one switch from ON to OFF. One is now ON and two are OFF
☛ 4. Enter the room. - If the light is ON, it is controlled by the switch you left ON. - If the light bulb is OFF, touch it. If it is warm it is controlled by the switch you turned ON and OFF. If it is cold, it is controlled by the switch you never turned on.
Submitted by: Administrator
☛ 1. Turn ON two switches, and leave one OFF.
☛ 2. Wait a few minutes.
☛ 3. Turn one switch from ON to OFF. One is now ON and two are OFF
☛ 4. Enter the room. - If the light is ON, it is controlled by the switch you left ON. - If the light bulb is OFF, touch it. If it is warm it is controlled by the switch you turned ON and OFF. If it is cold, it is controlled by the switch you never turned on.
Submitted by: Administrator
Read Online Grader Smoking Pipe Job Interview Questions And Answers
Top Grader Smoking Pipe Questions:
| ☺ | What's the least rewarding work you've ever done and why? |
| ☺ | How much are you willing to sacrifice to be successful at work As Grader Smoking Pipe? |
| ☺ | Basic 15 Interview Questions that Test Communication Skills As Grader Smoking Pipe: |
| ☺ | Top 17 Behavioral Interview Questions As Grader Smoking Pipe: |
| ☺ | Explain what are your strengths As Grader Smoking Pipe? |
Top New Artist Categories
| ☺ | Astrologist Interview Questions. |
| ☺ | Sociology Interview Questions. |
| ☺ | International Relationship Interview Questions. |
| ☺ | Art Director Interview Questions. |
| ☺ | Visual Arts Interview Questions. |
