推 chenemily:答案錯了呗 GOOGLE一下就知道囉 10/07 14:13
If n is a positive integer, what is the remainder when 3^(8n+3) + 2 is divided
by 5?
A. 0
B. 1
C. 2
D. 3
E. 4
Answer:
這題GWD給的答案是A
可是用餘數循環的觀點來看 3^8n 除五 餘數應該是1 最後算出來答案是4
是答案給錯 還是我換錯了呢 麻煩高手解答
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