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operation(s) puzzle

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Posted (edited) · Report post

If

253=243

512=504

854=837

is true, then what does 689 equal?

Hint: = means "do operation(s) and get x as result" where x equals the answer.

EDIT: the answer was random, I assure you. ;)

Edited by flamebirde
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Posted · Report post

I say

The sign of the devil

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Posted (edited) · Report post

Start with ABC. After the operation it is ABC - A - B - C. In other words, add the digits and subtract it from the original number. Therefore 689 = 666

Edited by googon97
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Posted · Report post

the do function "=" is sum up the digits and deduct. So devil's ticket if you please. - 666

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Posted · Report post

Start with ABC. After the operation it is ABC - A - B - C. In other words, add the digits and subtract it from the original number. Therefore 689 = 666

Nice. Pretty easy, although jhawk technically got it right he didn't explain.

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