Brain Teasers

[Oorang]

lol I also object... On the grounds that 0 ≠ Null

 

[schielrn]

"Bill predicts 0 to 0, because the score of the hockey game is 0 to 0 before it starts"

If this is the 'right' answer, then I object on existential grounds Before the game starts, there is no score. 0:0 is, as it were, the positive absence of any goals during the game.

But before the game what score do they show on the scoreboard. I don't typically see Null to Null in the scoreboard.

 

[Scott Huish]

"Bill predicts 0 to 0, because the score of the hockey game is 0 to 0 before it starts"

That is the correct answer.

 

[GorD]

You have a room with one light and 3 switches outside the room - one of which operates the light.

You can't see into the room at all and the door is closed. You are only allowed to enter/look into the room once.

How can you tell (without any doubt) which switch operates the light?

 

[schielrn]

You close your eyes and open the door. You have not entered or looked in the room at this point. Then you leave the door open. You then look into the room and flip each of the switches to see which one turns on the light.

 

[mattrx731]

You have a room with one light and 3 switches outside the room - one of which operates the light.

You can't see into the room at all and the door is closed. You are only allowed to enter/look into the room once.

How can you tell (without any doubt) which switch operates the light?

Leave switch 1 off, turn the other two on. Wait 5 minutes, turn off switch 2, enter room. If the light is on, it's switch 3, if the bulb is hot, but not on, it's switch 2, if the bulb is cold, it's switch 1.

 

[Scott Huish]

Why is half of 5 equal to 4?

 

[GorD]

Leave switch 1 off, turn the other two on. Wait 5 minutes, turn off switch 2, enter room. If the light is on, it's switch 3, if the bulb is hot, but not on, it's switch 2, if the bulb is cold, it's switch 1.

Correct - or you can do it with switching on one switch and waiting a few minutes also

 

[GorD]

You close your eyes and open the door. You have not entered or looked in the room at this point. Then you leave the door open. You then look into the room and flip each of the switches to see which one turns on the light.

Good try- but no

 

[schielrn]

Correct - or you can do it with switching on one switch and waiting a few minutes also

What was wrong with my answer, I followed the rules? How can you do it by only switching on one switch?