What is the tens digit of 2015^(2016)-2017^7? A: OB: 1 C: 3 D: 5 E: 8 相关知识点: 试题来源: 解析 ANotice that, for n≥2, 2015^n=15^n is congruent to 25( mod 100) when n is even and 75( mod 100) when n is odd. CCheck for
(In this way, we don't have to worry about the exponent very much.) Finally, 2017≡17( mod 100), and thus 20152016−2017≡25−17≡08( mod 100), as above.结果一 题目 What is the tens digit of 20152016−2017?( )A.0B.1C.3D.5E.8 答案 A相关推荐 1What is the tens...
What is the tens digit of ? A.0 B.2 C.4 D.6 E.8 显示答案 登录后才可以添加做题笔记哦,还没有账号? 马上注册 KMF 解析 网友解析 题目数据 收起 【过往命中时间】2021年05月11日中国线上;2020年12月25日;2020年10月25日中国线上;2020年10月22日中国线上;2020.08.21北美地区线上 【...
1What is the tens digit of positive integer x ?() (1)x divided by 100 has a remainder of 30. (2)x divided by 110 has a remainder of 30. A.条件(1)充分,但条件(2)不充分. B.条件(2)充分,但条件(1)不充分. C.条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分. D.条...
+ 30.. no matter what the d value is, the ten\'s digit will always be 3 --- 1 is ...
百度试题 结果1 题目Problem 8What is the tens digit of 2015^2016-2017?(A) 0 (B) 1 (C) 3 (D) 5 (E) 8Solution A 相关知识点: 试题来源: 解析 A 反馈 收藏
As you can see, the last two digits cycle after every 4 powers. 7^1(mod 100)=7^5(mod 100)=7^(21009)(mod 100). From there, we go two more powers. The last two digits are 43 so the tens digit is (D)4. 反馈 收藏
GMAT 考满分题库（1）应该是 ab.c 中的 a 为 3 啦
What is the tens digit of 0! + 1! + 2! + 3! + ... + 2000!? A 2-digit number is 9 times the sum of its digits. The tens digit is 7 more than the units digit. What is the number? What is the value of the digit 3 in the number 3,725.89?
If the units digit of the three-digit positive integer k is nonzero, what is the tens digit of k? (1) The tens digit of k + 9 is 3. (2) The tens digit of k + 4 is 2._出国考试答疑器_GMAT_试题_Data Sufficiency