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 yourself). Since 2016 is even, 2015^...
(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...
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...
1 --- the number x can be written as 100 * d + 30.. no matter what the d value is, ...
GMAT 考满分题库（1）应该是 ab.c 中的 a 为 3 啦
A. 0 B. 2 C. 4 D. 6 相关知识点: 试题来源: 解析 B 100000000=28×58, Like all powers of5⩾52,58 ends in”25”.100000000的最大奇数的十位数字是( ).A.0B.2C.4D.610000000=28×58,所有大于等于52的5的指数都以“25”结尾.故选B.反馈 收藏 ...
When two integers are multiplied together, the final two digits (the tens digit and the units digits) of the product are determined by the final two digits of each of the two numbers that are multiplied.This is true since the place value of any digit contributes to its equal...
What 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...
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
What is the tens digit of positive integer x ?() (1)x pided by 100 has a remainder of 30. (2)x pided 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...