Visual illusions and mind bogglers

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G

Greg B

#12
Proud Liberal said:
The word "the" appears twice but your brain tries to censor one out.
Proud, Thank you very much. I have been staring at that blo*dy sign for ages. I have a class this afternoon and I think I will stick all of these on the board to start them thinking.

Greg B
 

RoxaneB

Super Moderator
Super Moderator
#13
Greg B said:
Proud, Thank you very much. I have been staring at that blo*dy sign for ages. I have a class this afternoon and I think I will stick all of these on the board to start them thinking.
If they don't believe you, have them read it out loud. Don't worry, Greg, took me a few read-through's before I saw it. Thanks for helping out, Proud! :applause:
 

Marc

Hunkered Down for the Duration with a Mask on...
Staff member
Admin
#14
Wes is a magician, as I understand it. Hey Wes - why aren't you in here telling us your secrets or at least showing us some illusions?
 
D

D.Scott

#19
Here is an old mind boggler but it is worth posting.

Three people check into a hotel. They pay $30 to the manager and go to their room. The manager suddenly remembers that the room rate is $25 and gives $5 to the bellboy to return to the people. On the way to the room the bellboy reasons that $5 would be difficult to share among three people so he pockets $2 and gives $1 to each person. Now each person paid $10 and got back $1. So they paid $9 each, totaling $27. The bellboy has $2, totaling $29. Where is the missing $1?

Dave
 
B

Baldrick

#20
Think inputs and outputs

The key to this sort of puzzle is thinking about the inputs and the outputs. If you don't want the answer, look away now...




The simple answer is there is no missing $1.

The men paid $30 (the only cash input).

The hotel owner has $25, the men have $3 and the bellboy has $2 (the only cash outputs), totalling $30.

The question cleverly mixes up inputs with outputs - it's a beautiful example to use in training courses where you're trying to teach people about process thinking. In my limited experience, accountants get this problem straight away - almost everyone else struggles.
 
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