Riddles (3 pi each)

1. I can only live where there is light, but I die if the light shines on me. What am I?

2. A man wants to enter an exclusive club, but he doesn't know the password. Another man walks to the door and the doorman says 12, the man says 6, and is let in. Another man walks up and the doorman says 6, the man says 3, and is let in. Thinking he had heard enough, he walks up to the door and the doorman says 10, he says 5, and he isn't let in. What should he have said?

3. You want to boil a two-minute egg. If you only have a three-minute timer (hourglass), a four-minute timer and a five-minute timer can you boil the egg for only two minutes?

Good luck!

1. Shadow

2. He should have said 3. (The password is the number of letters in the number which the doorman says)

1. A shadow? I think that one comes from the Hobbit, but maybe I'm wrong.

3. Set both the 3 and 5 minute timers at the same time. Put the egg on when the 3 minute goes off, then when the 5 minute is done, so is your egg.

2. I can think of multiple solutions - technically you can make a quadratic go through any three points as long as the x-coordinates are different... not sure what you're looking for, but I'm sure it's good. 😊

I'd be interested to see one of your solutions.

3. 1.5

1. A shadow

2. 3

3. Turn on the three and five minute timers and let them run.  Put egg in after 3 min timer dings, when fine min timer dings the egg is done.  

6 pi @cutelittle for getting the first 2.

3 pi @SVUDrBell for getting the third one.

what do quadratics have to do with anything?