Partition the data into k folds, and each of the folds is set aside at turn as a test set. A clustering model is then computed on the other k − 1 training sets, and the value of the objective function (for example, the sum of the squared distances to the centroids for k-means)...
an odd numberB. an even numberC. a prime numberD. a multiple of 3相关知识点: 试题来源: 解析 A The sum is always odd. For example, 15+10=25. 一个奇数和一个偶数的和总是( ). A.一个奇数 B.一个偶数 C.一个质数 D.一个3的倍数 总和总是奇数.例如,15+10=25. 故选A.反馈...
odd numbers is n2 . The sum of the first 30 odd numbers is ( ). A. 60B. 90C. 300D. 900相关知识点: 试题来源: 解析 D The sum of the first n odd numbers is n2 . The sum of the first 30 odd numbers is 302=900. 前n个奇数的和是n2.前30个奇数的和是( ). A.60 B.90 C....
解析 C Choice C is correct. The sum of an odd number and an even number can be expressed as , where and are integers. ( must be odd, and must be even.) Their sum is equal to , or . Since is an integer, the quantity must represent an odd integer. ...
(A)The sum of several odd numbers is an odd number.(B)The sum of an odd numbers and an even number is an even number.(C)The sum of two prime numbers is an even number.(D)The sum of two odd numbers is a composite number.(E)One of any three consecutive positive integers must ...
Question 6Selected one answer choice 收藏 笔记 反馈 If x is the sum of n odd integers, which of the following must be true? A.x is odd. B.x is even. C.x≠0 D.If x is even, n is even. E.If n is odd, x is even. 我的答案: 登录查看答案...
解析 D is 50 more than N. 结果一 题目 【题目】D is the sum of the odd numbers from 1 through 99inclusive , and N is the sum of the even numbers from 2 through 98 inclusive:D=1+3+5+…+99 and N=2+4+6+⋯+98Which is greater, D or N , and by how much? 答案 【解析】...
, How much greater is their sum than the sum of the even numbers between and ( ). A: B: C: D: 相关知识点: 试题来源: 解析 A The sum of the odd numbers is , The sum of the even numbers is , Finally, is more than . 把和之间的奇数相加.把到之间的偶数相加,这两个和差多少( ...
If the sum of the ones' digits is odd, then the whole sum is odd. 下面哪个和是奇数( ). A.1248+8421 B.8412+4812 C.8421+4821 D.1248+1284 和的个位数是奇数,那么整个数就是奇数. A.1248+8421=∗∗∗9 B.8412+4812=∗∗∗∗4 C.8421+4821=∗∗∗∗2 D.1248+1284=...
What is the sum of the first four odd whole numbers( ). A: B: C: D: 相关知识点: 试题来源: 解析 D The first four odd whole numbers are, , , and . Their sum is . 前个奇数整数的和是多少( ). . . . . 前个奇数整数是,,,它们的和是. 故选.反馈 收藏 ...