Answer to riddle #30 Incorrectly Wired Tea & Tea and Coffee Machine
I found this puzzle whilst looking through my logs on a now defunct site that linked to mine called Mad Puzzles. I liked it so i sort of stole it, but the answer is all mine....
Here in lies the key. Each Button does NOT give what it is labled as. Meaning, for example, the button labled as Coffee can not be the Coffee button, so if it were to dispense coffee then it can only be the Random button. not the coffee button. in this case having established that the button labled Coffee is the random button we only have the buttons labled Tea and Random to work out, and only the designations Tea and Coffee left to assign. Since the button labled Tea can not be the Tea button it can only be the Coffee button. and the button labled Random must therefore be Tea....
Simple, however if the button labled Coffee had dispensed Tea we wouldn't have been so lucky, it could have been Tea or Random.
We need to start with the button labled Random.... Enough talking....
For the first drink press the button labelled Random.
We know this is NOT the Random button so if it dispenses Tea it is the Tea button likewise if it dispenses Coffee it is the Coffee button. From here it is simple to work out the other buttons knowing that they can't be what they say they are.
There are only two combinations each requires 50p
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