When the positive integer h is divided by 10, the remainder is 6. When the positive integer k is divided by 10, the remainder is 8. What is the remainder when h + k is divided by 10?
怎么樣,是不是比傳統(tǒng)的方法要簡單快捷得多呢?那么例題中所有條件不變,將問題改為:What is the remainder when h k is divided by 10,又該如何解呢?如果還是用傳統(tǒng)的方法去解,那就要涉及到多項式的乘法了。相比之下,賦值法依然是最佳解題方法。