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OpenStudy (anonymous):
Can you tell me how to calculate this -9 mod26 i know the answer is 17 but have no idea why .
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OpenStudy (jdoe0001):
what's the "mod"?
OpenStudy (anonymous):
modulo , from modulo arithmetic
OpenStudy (anonymous):
mainly used in cryptography
OpenStudy (anonymous):
Ok i figure it out. If anybody is interested, when dealing with negative number, we add the modulo until it becomes a positive integer. so -9 + 26 = 17 (mod 26). eg. -44 mod (26) will be -44+26 =-18 ; -18 + 26 = 8. so -44 mod 26 is 8
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