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By (user no longer on site) OP
over a year ago
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I do love a question with difficult answers if there is an answer at all.
One I came across today is a question by the great John Cleese.
If you are very, very stupid how could you possibly realise that you are very, very stupid?
What’s your favourite conundrum? And please don’t say chicken and the egg  |
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By (user no longer on site)
over a year ago
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There is one but I can't quite remember it. Something about three people paying for a meal and ending up with an extra quid. If this rings a bell to anyone please let me know it cause it blew my mind |
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Dunno if it counts as a conundrum but simulation theory always blows my mind
And every year as computers get better we get a few steps closer to knowing we are in one.
Kinda makes my head spin thinking about it |
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By (user no longer on site) OP
over a year ago
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"There is one but I can't quite remember it. Something about three people paying for a meal and ending up with an extra quid. If this rings a bell to anyone please let me know it cause it blew my mind"
I know the one you are talking about but I can’t remember it all either |
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"There is one but I can't quite remember it. Something about three people paying for a meal and ending up with an extra quid. If this rings a bell to anyone please let me know it cause it blew my mind"
Is it this one:
Three friends are splitting the bill after a meal out at a restaurant. The waiter says the bill is £30, so the guests split it evenly and pay £10 each.
As he’s walking away the waiter realises that he’s overcharged the group and the bill should only be £25. In order rectify this, he takes the £5 that is owed to the guests in order to bring the bill down to £25. On the way back to the table, he realises that he cannot divide £5 equally between three people.
As the customers are still unaware of the actual total of the revised bill, the waiter decides to just give each of the three friends £1 each and then
keep the leftover £2 as a tip for himself.
Basically, each customer got £1 back: meaning they only paid £9 each; bringing the total paid to £27. The waiter has the leftover £2.
The £27 the customers paid, + the £2 the waiter kept = £29 so, if the diners originally handed over £30, what happened to the remaining £1?
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By (user no longer on site)
over a year ago
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also works where the waiter keeps £3
one pays full £10, other two split the £2 a pound (each therefore paying £9).
10 + 9 + 9 + 3 = 31
Where did that pound come from?!  |
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By (user no longer on site)
over a year ago
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The god paradox. If a god is all powerful, it should be able to create a mountain that it is unable to lift. If a god cannot lift the mountain, it is not all powerful. If it cannot create such a mountain, again, it is not all powerful. |
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By (user no longer on site) OP
over a year ago
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"also works where the waiter keeps £3
one pays full £10, other two split the £2 a pound (each therefore paying £9).
10 + 9 + 9 + 3 = 31
Where did that pound come from?! "
Just messing with my head now |
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By (user no longer on site) OP
over a year ago
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"The birthday paradox is cool: in a room of 23 ( or is it 27) people the odd on two people sharing a birthday is 50:50"
This is a crazy stat but it’s so true we have done it many times through work functions |
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By (user no longer on site)
over a year ago
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"There is one but I can't quite remember it. Something about three people paying for a meal and ending up with an extra quid. If this rings a bell to anyone please let me know it cause it blew my mind
Is it this one:
Three friends are splitting the bill after a meal out at a restaurant. The waiter says the bill is £30, so the guests split it evenly and pay £10 each.
As he’s walking away the waiter realises that he’s overcharged the group and the bill should only be £25. In order rectify this, he takes the £5 that is owed to the guests in order to bring the bill down to £25. On the way back to the table, he realises that he cannot divide £5 equally between three people.
As the customers are still unaware of the actual total of the revised bill, the waiter decides to just give each of the three friends £1 each and then
keep the leftover £2 as a tip for himself.
Basically, each customer got £1 back: meaning they only paid £9 each; bringing the total paid to £27. The waiter has the leftover £2.
The £27 the customers paid, + the £2 the waiter kept = £29 so, if the diners originally handed over £30, what happened to the remaining £1?
"
Thats the fella!! Cheers man. A mate explained it to me and it made perfect sense but seconds later it was gone again and I just couldn't get it. So yeah, tats my fave |
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By (user no longer on site)
over a year ago
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"Thats the fella!! Cheers man. A mate explained it to me and it made perfect sense but seconds later it was gone again and I just couldn't get it. So yeah, tats my fave "
It tricks you into comparing two different sums, which are both correct, as if they were the same but reversed in that context.
£30 - (£2 + £1 + £1 + £1) = £25 (the revised bill)
Three people paying £9 to give a total of £27 never happened. They each paid £10, which was later subdivided outside of that equation.
Had they originally each paid £9, it would have come to £29 with the £2 tip.
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