百度试题 结果1 题目How many subsets does a set with n elements have? A. n B. 2^n C. n! D. 2n 相关知识点: 试题来源: 解析 b 反馈 收藏
The subsets of a set having {eq}n {/eq} elements give us sets that contain one element of the set up to all the elements of the set. The number of subsets of a set having {eq}n {/eq} elements is quickly computed as {eq}2^n {/eq}....
How many subsets of two elements can be removed from the set {1,2,3,4,5,6,7,8,9,10,11} so that the mean(average) of the nine remaining numbers is 6?( )在集合{1,2,3,4,5,6,7,8,9,10,11}中,有多少个含有两个元素的子集可以被移除,使得剩余九个数字的均值(平均数)是6?( ) ...
so that the mean (average) of the remaining numbers is6?( )A. 1 B. 2 C. 3 D. 5 E. 6 相关知识点: 试题来源: 解析 D 翻译:从集合{1,2,3,4,5,6,7,8,9,10,11}中去掉两个数,使得剩下所有数字的平均数是6,一共有( )多少种方法? 11个数中去掉两个数剩下9个数,平均数是6,总和...
How many subsets of two elements can be removed from the set {1,2,3,4,5,6,7,8,9,10,11} so that the mean (average)of the remaining numbers is ?( ). A. 1 B. 2 C. 3 D. 5 E. 6 相关知识点: 试题来源: 解析 D 有多少个二元子集,使之从{1,2,3,4,5,6,7,8,9,10,...
【题目】How many subsets of two elements can be removed from the set {1,2,3,4,5,6,7,8,9,10, 11} so that the mean (average) of the remaining numbers is ?().A1B.2C.3D.5E6 相关知识点: 试题来源: 解析 【解析】D 反馈 收藏 ...
【题目】How many subsets containing three different numbers can be selected from the set {89,95,99,132, 166,173}so that the sum of the three numbers is even?(A.6B.8C.10D.12E24 相关知识点: 试题来源: 解析 【解析】D 反馈 收藏
How many bit strings of length n are palindromes? How many different bit strings are there of length 7 that contain the string 0000? How many subsets of 3 distinct integers from 1, 2, 3, . . . , 90 are there whose sum of integers is divisible by ...
How many subsets of {2,3,4,5,6,7,8,9} contain at least one prime number?( )A.128B.192C.224D.240E.256 答案 DConsider finding the number of subsets that do not contain any primes.There are four primes in the set:2, 3, 5, and 7.This means that the number of subsets wit...
百度试题 结果1 题目 How many subsets does A have ( ) let A={1,2,3,4,5,6,7) A.128B.64C.32D.16 相关知识点: 试题来源: 解析 A 暂无解析 反馈 收藏