# Thread: Word problems for fun!

1. Originally Posted by esidebill
Something to do with the cigarette perhaps. You mentioned nothing about having anything to created a light. Don't cars have cigarette lighters?
Haha Yes! People create complicated lines of thought like " first the candle so I can see, then i light the fire place....." but they forget that you need a least an inicial fire to start the whole process! If you answer "But how will start the fire?" is the correct answer.

2. Originally Posted by Jonnyboy
I see a thing. Of this thing I know these three:
1) The man who makes this will sell it.
2) The man who buys this will not use it.
3) The man who uses this will not know it.

What do I see?
A coffin!

3. What's the next number?

1
11
21
1211
111221
?

4. Originally Posted by fragrance
What's the next number?

1
11
21
1211
111221
?
Based on our system of counting/mathematics, there isn't any pattern I can see. Why can't I see it?!?!?! There must be some trick to this... /scratches head

5. Hahahahaha, got it!!! It took me writing it out and reading aloud to get it. Tricky tricky tricky...

1
11
21
1211
111221
312211
?

6. hua hua hua!

Damn it. It didn't occur to me to read it out loud, but when Jonnyboy said that and I did, I got it! Good one!

What about my tennis ball problem?

7. Originally Posted by Red Herring
What about my tennis ball problem?

One of twelve tennis balls is a bit lighter or heavier (you do not know which) than the others. How would you identify this odd ball if you could use an old two-pan balance scale only 3 times?
You can only balance one set of balls against another, so no reference weights and no weight measurements.
I've encountered a similar problem before, so I'll abstain. It's a good one though.

8. You have 12 coins before you in a dark room, 6 of them heads and 6 of them tails. You can not see them and have no other way (like touching, etc) to tell which is which. Your task is to divide them into two groups of 6 coins each in such a way that group A has the same number of heads and tails as group B. You are allowed to turn one or several coins as often as you like until you have the correct number of heads and tails. What is the easiest and fastest way to achieve the task?

9. Reflection principle. Split them into two groups, and turn all six coins from one of the groups over.

10. Originally Posted by Jonnyboy
Reflection principle. Split them into two groups, and turn all six coins from one of the groups over.