[考題] 101桃園數學Q.5
想問一題數學 對大家來說應該是很簡單,但是我算錯了,想問問是哪個觀念錯了..
桃園Q5 試求6的2012÷11的餘數為多少? (A)3 (B)6 (C)7 (D)9 答案是A
我的算法是6^2012=36^1006
36=3x11+3 所以36^1006=3^1006
其中3的次方中的尾數有四個循環(3^1=3 3^2=9 3^3=7 3^4=1)
1006÷4=251....2
故 取3^2的尾數9
以上 什麼地方錯了呢? 請提點一下 謝謝...
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