写出每个数字的前四次方，就像2，4，8，16这样
(4)2S=15×96 Divide both sides of (4) by 2 (5)S=15×48=720. The sum is 720. 6的前15个倍数是6,12,18,24,⋯,84,90.这些的倍数的总和是多少? 解析一:15的6的倍数的平均值是中间数字,即第8个数字.第八个数字8×6=48.那么15个乘的总和为15×48=720. 解析二: (1) S=6+12+...
The mean deviation of the numbers 3, 4, 5, 6, 7 from the mean is (a) 25 (b) 5 (c) 1.2 (d) 0 View Solution The mean of 5 numbers is 4. If 1 is added to each number , then the new mean is (a) 4 (b) 5 (c) 3 ...
百度试题 结果1 题目List the first four multiples of 8.8,16,24,32 相关知识点: 试题来源: 解析 8,16,24,32 反馈 收藏
Find the first five multiples of each number. (1) The first five multiples of 6 are , , , , and . (2) The first five multiples of 8 are , , , , and .相关知识点: 试题来源: 解析 (1) 6;12;18;24;30 (2) 8;16;24;32;40 (1) N/A (2) N/A反馈 收藏 ...
List the first 5 multiples of each number.(1)3(2)6(3)8. 相关知识点: 试题来源: 解析 (1) 3 3, 6, 9, 12, 15 (2) 6 6, 12, 18, 24, 30 (3) 8 8, 16, 24, 32, 40 . (1) N/A. (2) N/A. (3) N/A. .
百度试题 结果1 题目(a) List the first four common multiples of 3, 4and 6. 相关知识点: 试题来源: 解析 12,24, 36, 48 反馈 收藏
百度试题 结果1 题目Find the sum of the first 3 multiples of 14. A. 7 B. 28 C. 56 D. 84 E. 140 相关知识点: 试题来源: 解析 C 14+28+42=84.反馈 收藏
gmat数学题if M is the average of the first 10 positive multiples of 5 and if m is the median of the first 10 positive multiple of 5,what is the value of M-m?A -5 B 0 C 5 D 25 E 27.5
百度试题 结果1 题目Write down the first 5 multiples of 9: . 相关知识点: 试题来源: 解析 9, 18, 27, 36, 45. 9, 18, 27, 36, 45.反馈 收藏