In addition modulo m, if a = 4, b = 12 and m = 9, then \(a \oplus_m b\) is equal to
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 7
In addition modulo m, \(a \oplus_m b\) is the remainder when a + b is divided by m.
\(a + b = 4 + 12 = 16\)
\(16 = 1\times 9 + 7\)
So \(4 \oplus_9 12 = 7\).