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#1 |
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Bronze Medalist
Jan 2004
Mumbai,India
22×33×19 Posts |
3 3 8 8 puzzle Using the four numbers 3, 3, 8, and 8, and the usual four arithmetic operations (addition, subtraction, multiplication and division), can you make the number 24? This looks a bit too easy (3 × 8 = 24), until I tell you that you have to use all four numbers - both 3s and both 8s. No silly tricks allowed - you can't use an 8 and a 3 to make 83, or raise numbers to powers or take square roots or factorials or anything else of that kind. You can use fractions on the way, of course, but the final answer must be exactly 24. For example: 3 × 8 + (3/8) makes 24 and three-eighths, which is quite close, but no banana. Mally
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#2 |
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Jan 2005
Transdniestr
503 Posts |
Are parenthesis allowed?
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#3 |
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Oct 2005
Fribourg, Switzerlan
25210 Posts |
I think it is impossible.
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#4 |
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Aug 2002
Buenos Aires, Argentina
2×683 Posts |
A closer solution is 8*8/3+3 = 24.33333... instead of 24.375 written by Mally.
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#5 |
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"Robert Gerbicz"
Oct 2005
Hungary
5CE16 Posts |
By computer search: 24=8/(3-8/3) :banana:
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#6 | |
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Oct 2005
Fribourg, Switzerlan
22×32×7 Posts |
Quote:
I only had a b c d (a b) (c d) ((a b) c) d (a b c) d (a b) c d But unfortunately I forgot a (b c d) :( Can I ask you what programming language you did with? Last fiddled with by victor on 2006-08-03 at 19:31 |
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#7 | |
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6809 > 6502
"""""""""""""""""""
Aug 2003
101×103 Posts
2×7×19×37 Posts |
Quote:
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#8 | |
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"Robert Gerbicz"
Oct 2005
Hungary
2·743 Posts |
Quote:
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#9 |
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Oct 2005
Fribourg, Switzerlan
FC16 Posts |
Your UBASIC looks very cryptic to me
I haven't tried to understand your code yet, but may be my PHP (I know, it's a poor programming language, and I don't like it, but it is damn practical, easy and quick to prog) code could interrest someone ... |
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