tricky riddle

if 1981 becomes 1861 what does 1809 become?
10:07 Tue 22nd May 2012
 
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shooty
Best Answer
invert the numbers
10:11 Tue 22nd May 2012 Go To Best Answer

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6081
6081
1689. Or. 6081?
invert the numbers
6081
Or minus 120?
Or 1689 if the rule is subtract 120
1089 or 1689 or 6081 depending on which transformation you are applying.
1089 0r 6081, the latter's more straightforward, a 180 degree rotation

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