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 Head Janitor Job Interview Questions And Answers
Top Head Janitor Questions:
☺ | What is more important to you money or success? |
☺ | Explain an occasion when you had to adapt in the face of a difficult situation? |
☺ | What schedule do you hope to work? Are you willing to work extra hours? |
☺ | What would your first 30, 60, or 90 days look like in this role As Head Janitor? |
☺ | Give an example of a time you successfully worked As Head Janitor on a team? |
Top Labour Categories
☺ | Cleaner Interview Questions. |
☺ | Boiler Operator Interview Questions. |
☺ | Electrician Assistant Interview Questions. |
☺ | Contract Labour Interview Questions. |
☺ | Construction Worker Interview Questions. |