I've just been emailed a strange puzzle. Apparently this appeared on some TV quiz show a day or 2 ago (possible satellite). This is supposedly word for word. No other explanation or hints. Apparently, the answer is: 2706. But why?

doesn't make any sense -- probably lacking something important. amount spent of that change = £1.64 theres is any number of combination of prices for chocolate bars and crisps that would come to 164 2x + 3y = 164 for example: 30p per crisps , 37p per chocolate bar 40p per crisps , 22p per chocolate bar and so on. look for more info.

Apparently, there is no more info. I suspect some evil trick. Something to do with names of chocolate bars perhaps. The "Add all numbers" looks a bit suspect as well. Not "Add all the numbers".

hmm.. thought it could be a trick question based on the numbers given rather than anything to do with the cost of the items - ie 5, 2, 3, 3, 36 (and possibly the 'to' could be counted as a 2) How certain are you on the exact wording & answer? if it was intended to be multiply rather than add you would get a score of 3240

How do you define what in the sentence are representative of numbers ... if you include Roman Numerials ie i v x l c d m .... then just as valid is a b c d e and f ... which are hexidecial numbers. each letter represents a numeric value in the alphabet - 1 to 27 groups of letter represent numbers on a keypad - abc = 2 , def = 3 etc I could go on ....

That looks quite plausible. I get 2670 on Roman numerals (rewriting 5 as five). The numbers alone come to 49. How? Is this Roman numerals as well? Maybe the answer I was given (2706) is a typo and should be 2670. Had enough now

if that was the definative solution, then the puzzle is ridiculous ..... on the basis of only being correct if you only choose the number representations they choose and exclude others. ..... its like some of the lateral thinking questions .... where the question keeps saying NO until you provide the exact same solution he is thinking of ... regardless of the other 50 correct lateral solutions you gave. They miss the point in there rush to 'appear' clever.

But isn't that the point of this sort of puzzle? It's not an IQ test. There may well be several interpretations, but it is the perogative of the person asking to decide which of the possble answers is deemed to be the correct one.

when all the other solutions are correct, its like asking what animal has 4 legs ... a cow ... NO a horse .... NO a giraffe ..... YES the only absolute answer to that puzzle would be to calculate every conceivable number representation from every culture that has ever lived or functioned on the planet and every theoretical scientific representation ..... which is an impossible task

Yes, it suddenly dawned on me that we should be including the Roman Numerals, but there are a few oddities. For example, as it says add all numbers, with five do we count 4, 1+5 or both? Similarly with six we could have 9, 1+10 or 20. I then found, after doing a minor bit of research, that in medieval times j was sometimes substituted for i and u for v, which could give us an additional 16. As EG says, we haven't been given enough information to come to a valid conclusion.

Reminds me of when i saw Harry Hill live a few years ago - HH (to audience): "OK, name a bird...mmmmm....mmmm......name of a bird anyone?" Audience member: "A thrush" HH: "Sorry, that one's already taken"

Bit pedantic of me I know, but given the available information, here are the various answers I've come up with; 2666 2668 2670 2672 2676 2678 2680 2682 2683 2684 2685 2692 2693 2694 2695 2696 2698 2699 2701 2709 2711 PS I forgot, there's also 49 and 59.