Riddles and Puzzles

[brikis98]

Ok, I'm bored out of my skull @ work, and figured it would be fun if people posted riddles/puzzles and answered them in this thread. it might be a good idea to mark your posts with SPOILER or the like if you are providing an answer or hint.

I'll start with a very simple (somewhat open ended) puzzle:




Why are sewer (man hole) covers usually round?

 

[AdamSnow]

- So they dont fall in the hole...
- So they are easier to remove from the road
- etc.

 

[Chronoshock]

Simply because side length < diagonal length for a square. Whereas for a circle there is uniform length all around

 

[brikis98]

Originally posted by: AdamSnow
- So they dont fall in the hole...

explain

Originally posted by: AdamSnow
- So they are easier to remove from the road

explain

 

[brikis98]

Originally posted by: Chronoshock
Simply because side length < diagonal length for a square. Whereas for a circle there is uniform length all around

well done :beer:


now post a puzzle.

 

[Rastus]

Einstein's Puzzle

I haven't solved it yet. BTW, there is a prize for solving it by monday.

 

[chuckywang]

Originally posted by: brikis98

Why are sewer (man hole) covers usually round?

Cause manholes are round.
/thread

 

[Kyteland]

Here's a bunch I posted a while back

linky

 

[AdamSnow]

Originally posted by: brikis98

Originally posted by: AdamSnow
- So they dont fall in the hole...

explain
- Well, since they have a lip on them to sit on, if you were to tilk the cover on its side it would not be able to fall into the hole.

Originally posted by: AdamSnow
- So they are easier to remove from the road

explain

a circle is a lot easier to roll out of a hole then a square would be. 1 person could do it as opposed to two.

 

[brikis98]

Originally posted by: Rastus
Einstein's Puzzle

I haven't solved it yet. BTW, there is a prize for solving it by monday.

ok, i'm pretty sure i solved it. a pain in the butt, really, but doable.

keep 'em coming ppl

 

[Aenygma]

Mary is as old as Richard will be when Mary is twice as old as Richard was when Mary's age was half the sum of their present ages.

How old are Mary and Richard?

 

[HonkeyDonk]

Originally posted by: wyst
Mary is as old as Richard will be when Mary is twice as old as Richard was when Mary's age was half the sum of their present ages.

How old are Mary and Richard?

too old.

 

[imported_Kensai]

Mary is 5, Bob is 6, Steve is 7. What's the combined age of their parents?

 

[ruffilb]

42.

 

[chuckywang]

Originally posted by: wyst
Mary is as old as Richard will be when Mary is twice as old as Richard was when Mary's age was half the sum of their present ages.

How old are Mary and Richard?

There are many answers.

3M = 4R is the equation.

So, Mary could be 4 and Richard 3 or Mary could be 8 and Richard 6, etc.