8. We write down all the natural numbers from1 to500 on a piece of paper how many times does digit “5” appear?相关知识点: 试题来源: 解析 数字'5' 在1到500的所有自然数中一共出现了101次。 **1. 个位数为5:** 从1到500,个位数是5的数字有5, 15, 25,... 495,共计50个。 **2....
A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself. This means that a prime number cannot be divided evenly by any other number except for 1 and the number itself. For instance, there are 46 prime numbers from 1 to 200: 2, 3, 5...
15. From the numbers 1,2,3,4,… ,500 a sequence is formed by deleting numbers so that no two remaining numbers have a sum which is a multiple of 7. The maximum number of numbers in this sequence is D(A)216(B)217(C)213(D)287(E)284 相关知识点: 试题来源: 解析 答案见...
结果1 题目 15. From the numbers 1,2,3,4,…,500 a sequence isformed by deleting numbers so that no tworemaining numbers have a sum which is a multipleof 7. The maximum number of numbers in thissequence isD(A)216(B)217(C)213(D)287(E)284 相关知识点: 试题来源: 解析 答案见...
From the numbers1,2,3,4,…,500 a sequence isformed by deleting numbers so that no tworemaining numbers have a sum which is a multipleof 7. The maximum number of numbers in thissequence is(A)216(B)217(C)213(D)287(E)284 相关知识点: ...
life. Numbers are used widely in every aspect of life. Numbers came into use about 500 years ago in China. From “1”, “10” to hundred, thousand, ten thousand, the number system was complete as early as in the Shang Dynasty and the decimal system (十进制) also dated back to that...
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Hence, in the same way, we can write all the other numbers from 200 to 1000. Only the numbers that are the multiples of hundreds are written in words as given in the table below. Numbers Words 100 Hundred 200 Two-Hundred 300 Three-Hundred 400 Four-Hundred 500 Five-Hundred 600 Six-...
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小学英语数学题From the numbers 1,2,3,4,5,...,500 sequence is formed by deleting numbers so that no two remaining numbers have a sum which is a multiple of 7. The maximum number of numbers in this sequence is___