Necessary condition to apply the Chinese remainder theorem is modulo of congruence should be:
Necessary condition to apply the Chinese remainder theorem is modulo of congruence should be: Correct Answer Relatively prime
Concept:
Chinese remainder theorem (CRT): Chinese remainder theorem is a method to solve a system of simultaneous congruence. One most important condition to apply CRT is the modulo of congruence should be relatively prime.
For example, consider simultaneous congruence relation
x ≡ a1 (mod m1),
x ≡ a2 (mod m2)
To apply CRT, m1 and m2 must be relatively prime.
Modulo of congruence: If two number a and b gives the same remainder when divided by m or difference 'a - b' is completely divisible by m, then m will be modulo of a and b.
Explanation:
As discussed above, we can say that the modulo of congruences should be relatively prime.