【题目】问有多少个五位数有至少2个数位是奇数?How many five-digit numbers are there with at least2 digits which are odd numbers? 答案 【解析】74375.相关推荐 1【题目】问有多少个五位数有至少2个数位是奇数?How many five-digit numbers are there with at least2 digits which are odd numbers?反馈...
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. ...
E. The sum of two even numbers. 相关知识点: 试题来源: 解析 C Choice C is correct. The sum of an odd number and an even number can be expressed as (2n+1)+(2m), where n and m are integers. (2n+1 must be odd, and 2m must be even.) Their sum is equal to 2n+2m+1,...
Which of the following numbers is an odd number? ( ). A: B: C: D: 相关知识点: 试题来源: 解析 C N/A. 反馈 收藏
百度试题 结果1 题目3. Which of the following numbers is an odd number?(1)130(2)254(3)359(4)428(③ ) 相关知识点: 试题来源: 解析 (3) 反馈 收藏
【题目】 (a) m is an odd number.Which of the numbers below mustbe even, and which must be odd?Write 'odd' or 'even' undereach one.2m m23m-1(m-1)(m+1)(b) m is an odd number.Is the number odd, or even, oris it not possible to tel1?T ick () thecorrect bor.odd even...
2. Which of the statements below isalways true?(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...
74ab是一个能被9整除的四位数,且a及b皆为奇数(单数),求a的所有可能值.74ab is a 4−digit number which is divisible by 9 and both a and b are odd numbers. Find all the possible values of a. 答案 7,9.相关推荐 174ab是一个能被9整除的四位数,且a及b皆为奇数(单数),求a的所有可能值...
(a) m is an odd number.Which of the numbers below mustbe even, and which must be odd?Write ‘odd’ or ‘even’ undereach one.2mm23m-1(m-1)(m+1)x_'___ⅵ-Ⅰ-4864+1)(b) m is an odd number.Is the number odd, or even, oris it not possible to tell?Tick (_) thecorre...
解析 (1)Solution:We know that the square of an odd number is odd and the square of an even number is even.The square of 431 is an odd number.(2)The square of 2826 is an even number.(3)The square of 7779 is an odd number.(4)The square of 82004 is an even number....