结果1 结果2 题目In how many of the integers between 1 and100 does the digit 5 occur exactly once A. 10 B. 18 C. 19D. 20 E. 21 相关知识点: 试题来源: 解析 B 在1至100之间的数字中。5仅在它们中出现1次的整数有多少 解答本题的关键是考生一定要记住5只能在这些数字中出现1次,5在其中...
How many integers from 3000 to 6000 that are divisible by 3 and no digits are even? How many sets of three integers between 1 and 20 are possible, if no two consecutive integers are to be in a set? How many subsets of 3 distinct integers from 1, 2, 3, . . . ...
在1至100,且包括1和100的整数中,若能被2整除(divisible),就被放入A列中,若能被3整除就被放入B列中,有多少数在A列中而不在B列中 1至100中能被2整除的数显然是50个,那么如何算能够被3整除的数呢 在小于或等于100的正整数中能被3整除的最大的数是3的多少倍.就有多少个数能被3整除。在1至100中能被...
Set Y is the set of positive integers between 1 and 100 (inclusive)If x is a member of set X and y is a member of set Y, what is the greatest value of x +y such that both x + y and xy are members of set Y? 相关知识点: ...
How many sets of three integers between 1 and 20 are possible, if no two consecutive integers are to be in a set? Prove that n^(3) + 1 is composite for all integers n where n is greater than or equal to 2. Remember a...
1 and 2011, and s is the sum of all odd integers between 0 and 2010, then r−s=( ). A. 1005B. 1006C. 2010D. 2011相关知识点: 试题来源: 解析 A If r=(2+4+6+…+2010) and s=(1+3+5+…+2009),thenr−s=(2−1)+(4−3)+(6−5)+…+(2010−2009)=1+1+1+...
1 and 2003 is the same as the number of odd integers between 4 and( ). A. 2000B. 2002C. 2004D. 2006相关知识点: 试题来源: 解析 D The number of even integers between 1 and 2003 is the same as the number of odd integers between 4=(1+3) and (2003+3). 1到2003之间偶数的个数...
A and B take turns to write positive integers between 1 and 15 on the board, stipulating that any multiples of the number written on the board can no longer be written. If A writes the number first, who has a winning strategy? A.A writes 1 first, then B can't write anything, ...
The integers between 1 and 100,inclusive,are put in list A if they are divisible by 2and in list B if they are divisible by 3.How many integers in list A are—not in list B()A.11B.16C.25D.33E.34的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shuashuati
1.(2020.10.25,大陆地区线下) What’s the number of integers between 1 and 2,000, inclusive, that can be transformed into not only a perfect square number and also a perfect cubic number? A. 0 B. 1 C. 2 D. 3 E. 4 2.(202...