Riddles and Puzzles

[classic33]

Christmas Teaser!
Four angels sat on the Christmas tree amidst other ornaments. Two had blue halos and two - yellow. However, none of them could see above his head. Angel A sat on the top branch and could see the angels B and C, who sat below him. Angel B, could see angel C who sat on the lower branch. And angel D stood at the base of the tree obscured from view by a thicket of branches, so no one could see him and he could not see anyone either.
Which one of them could be the first to guess the color of his halo and speak it out loud for all other angels to hear?

 

[Hill Wimp]

was i right then ?

 

[classic33]

was i right then ?

Not quite!!

 

[Hill Wimp]

A

 

[Hill Wimp]

13:43

 

[Deleted member 23692]

Angel B was first.

He assumes that if he had the same colour halo as C, then A would have shouted out 1st, but seeing as A didn't, B must have the opposite colour to C

 

[geekinaseat]

12:44

boom

 

[classic33]

A

Angel B was first.

He assumes that if he had the same colour halo as C, then A would have shouted out 1st, but seeing as A didn't, B must have the opposite colour to C

Both correct

 

[Hill Wimp]

Both correct

Ok explain that one

 

[geekinaseat]

Angel B was first.

He assumes that if he had the same colour halo as C, then A would have shouted out 1st, but seeing as A didn't, B must have the opposite colour to C

 

[classic33]

Ok explain that one

Thats the second part of the question.

 

[Hill Wimp]

and your a geek, what chance have i got ????

 

[classic33]

Angel B was first.

He assumes that if he had the same colour halo as C, then A would have shouted out 1st, but seeing as A didn't, B must have the opposite colour to C

Right answer, partly wrong reasoning.

 

[Puddles]

A Petri dish hosts a healthy colony of bacteria. Once a minute every bacterium divides into two. The colony was founded by a single cell at noon. At exactly 12:43 (43 minutes later) the Petri dish was half full.
At what time will the dish be full?

When all the toddlers at pre-school have stopped licking each other and sharing nicely.

 

[geekinaseat]

1. All the angels are colourblind, mute or otherwise preoccupied and don't care
2. All of them speak at the same time
3. Some kind of crazy logical explanation that makes sense
4. All/None of the above?

I think I covered all angles (angels?) there...