Here's a puzzle that a teacher told me today:
How can you cut twelve in half and get seven?
Hint (only if you're stumped):
Don't let just regular numerals control you
Another Hint
Notice that I didn't use the math tag
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Sign up to join this communityHere's a puzzle that a teacher told me today:
How can you cut twelve in half and get seven?
Hint (only if you're stumped):
Don't let just regular numerals control you
Another Hint
Notice that I didn't use the math tag
Slice XII across the middle to get VII.
I'm pretty sure that's what Quark's answer is facetiously alluding to.
Here's a more mathematical answer from a programmer:
If we use the base 12 numbering system then 12 (in base 12) == 14 (in base 10), and half of that is 7 (in both base 10 and 12).
Slightly different answer:
12 is a base ten number. Cut the base in half, and you get 7.
(base five) 12 = (base ten) 7
Here's how you can get seven by cutting twelve in half:
This is 12 points:
. . . .
. . . .
. .
. .
Cutting it diagonally from top right to bottom left, we get two sets of 7 points:
. . . .
. . .
and:
.
. .
. .
. .
@CoolGuy I disagree that it isn't cutting "12" in half. No matter which of the resulting fragments you take, you get 7.
Lines in PS are to ensure that they are exactly (100/100 pixels above and below guide lines) cut in half.
Using roman numbering seems to do the trick : 12 is : XII, cut it horizontally and you have VII at the top
/||/\||
12 = XII
strike through the middle
the top half now becomes VII
VII = 7