What is the answer to the light switch riddle?

What is the answer to the light switch riddle?

Here it is: Open the door. If the light is on, then switch number 2 controls it. If the light is off, then go and feel the bulb with your hand. If the bulb is hot, then switch number 1 controls it, and if the bulb is cold, then switch number 3, the one you did not touch, controls it.

How many light bulbs are turned on at the end?

Let’s realize what we discovered. If there’s no randomness, then we’ll get 10 light bulb that are turned on in the end. If there’s a 50–50 chance to press the switch, then we’ll get 50 light bulbs that are turned on.

Did a light bulb go off in your head?

a light bulb goes off in (one’s) head One is suddenly struck with an ingenious or inspired idea, insight, or revelation. In this expression, the phrasal verb “go off” means “turn on” or “become active.” We spent hours trying to come up with a solution, when suddenly a light bulb went off in my head.

Why does my 3 way lamp switch not work?

With a 3-way bulb, if it isn’t working at all, it’s probably dead. If both elements don’t come on there, replace the bulb. If you have a 3-way bulb that works as it should in a good 3-way socket, and only one of the two elements works in a different socket, the problem is with the socket.

How high can you count with three light bulbs?

With 3 light bulbs, we get 8 combinations representing the numbers from 0 to 7.. With 4 light bulbs, 16 combinations representing the numbers 0 to 15.

What is the final state of Bulb No 64 and how many of the light bulbs are illuminated after the 100th person has passed through the room?

And how many of the light bulbs are illuminated after the 100th person has passed through the room? Right first the answers: Light Bulb 64 is on. The total number of bulbs which are on including #64 is 10.

What does light bulb above head mean?

—used to say that a person suddenly understands something or has a great idea After thinking about the problem for several days, a light bulb went off in her head, and she knew how to solve it.

What do light bulbs symbolize?

The light bulb is the symbol of invention and sometimes of intelligence. The light bulb was created by Thomas Edison and it helped everyone by work being available after dusk. The light bulb is also a symbol of light and connections.

Do all lamps work with 3 way bulbs?

In summary, you can use pretty much any type of regular bulb with any wattage in your 3-way lamp. You just won’t be able to adjust the lighting beyond whatever the standard brightness is for the bulb.

Why do my 3 way bulbs burn out?

Habitually loose connections, either at the socket or with the wire connections, can burn out the bulb quickly, as well as cause flickering. These loose connections increase the electrical resistance and the heat passing through the filament of the bulb, which can shorten its life.

How to switch three light bulbs in a room?

The consensus of opinion seems to be this is the best answer: • Switch on switches 1 & 2, wait a moment and switch off number 2. • Enter the room. Whichever bulb is on is wired to switch 1, whichever is off and hot is wired to switch number 2, and the third is wired to switch 3. Obviously any combination would work.

Where are the 3 light bulbs in the hallway?

Suppose that you are standing in a hallway next to 3 light switches, which are all off. There is another room down the hallway, where there are 3 incandescent light bulbs – each light bulb is operated by one of the switches in the hallway. Because the light bulbs are in another room, you can not see them since you are standing in the hallway.

Are there 3 bulbs on the 1st floor?

There are 3 bulbs (B1, B2 and B3) in a room on 1st floor, they can be operated using 3 switches (S1, S2, S3) present on the ground floor. You don’t know which Switch is for which bulb. How can you figure out, which switch is for which bulb if you are allowed to visit 1st floor only once.

Is there a lightbulb switch in the basement?

There are three switches in the basement, two of which are useless, one is connected to a lightbulb in the attic. You must determine which needs saving and remove the other two. It’s basically the same solution as our first idea. That is switch on 1&2, wait a minute, switch off two and go to the attic and check if the bulb is on, hot, or cold.