LZ 请教一道题,用您的way 443的8n+2次方除以5的余数是多少?n是正整数 答案是: 4 (450-7)^(8n+2) mod 5 (-7)^(8n+2) mod 5 (-10+3)^(8n+2) mod 5 (3)^(8n+2) mod 5 (5-2)^(8n+2) mod 5 (2)^(8n+2)mod 5 (4)^(4n+1) mod 5 (5-1)^(4n+1) mod 5 (-1)^(4n+1) mod 5=-1.... zhen de bu zhi dao le ... sorry ya