The operating rules are as follows:

Computer language remainder operator

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MOD is the remainder operator.

In computer language, mod is an operator that divides and returns the remainder.

Grammatical module (dividend, divisor)

parameter

The numerator of division.

Divider, denominator of division.

Usage: When the divisor is not zero, if the dividend is negative, the result is negative or zero; if the dividend is less than the divisor, the result is dividend. The sign of the divisor has no effect.

Q:

What does 1(mod3) mean?

What does 1+3m = 1 (mod 3) mean?

A:

The latter mod3 means: the modulus relative to 3, that is, divide by 3 to get the corresponding remainder.

For example, 1+3m = 1 (mod 3), and the remainder of 1+3m divided by 3 is 1.

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