Find the remainder when 54×77 + 54 − 77 is divided by 16.
Note
Compute each term modulo 16; the expression is congruent to 7 modulo 16.
Find the remainder when 54×77 + 54 − 77 is divided by 16.
Compute each term modulo 16; the expression is congruent to 7 modulo 16.