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    That's not the question. Commented Aug 9, 2012 at 8:13
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    Accidentally, in all those langauges 1/6 results in .166666667, or 0.16666666666667 or something similar. I chose the ((1/6)*6)==1 variant to get rid of those little differences, but it looks like I overestimated the math skills of some people. Commented Aug 9, 2012 at 8:49
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    @RocMartí yes, it really is... Commented Aug 9, 2012 at 15:11
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    I would be surprised to see (1.0/6.0)*6 being exactly equal to 1! The rounding of the result of (1.0/6.0) will lead to a small difference. (Although there will be a few languages that default to infinite precision) Commented Aug 9, 2012 at 17:49
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    @Sjoerd: It's not too surprosing that it's exact, actually. Consider in decimal the scenario of 1/11 * 11 with all values accurate to five significant figures. The value of 1/11 is 9.0909 * 10^-2. Multiply by 11 and one would get 99.9999 * 10/-2 before rounding. Round to five significant figures and the result will be 1.0000 * 10^0. Note that the key is that the mantissa of 1/6 is "...0101010101...". If the last bit of a representation is a "1", multiplying it by six and rounding will yield 1. If the last bit were zero, it would not. Commented Aug 9, 2012 at 18:46