how many positive integers less than 1000 are not divisible by 3

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how many positive integers less than 1000 are not divisible by 3

how many positive integers less than 1000 are not divisible by 3
how many positive integers less than 1000 are not divisible by 3

how many positive integers less than 1000 are not divisible by 3
翻译过来 应该是 小于1000的整数中,有多少不被3整除?
被3整除那一定是三的倍数,1000里面被3整除的最大的数是999,999/3=333
那么小于1000的整数中被3整除的个数为333个,那么
不被3整除的个数为999-333=666个

楼上的,题意是小于1000的正整数中不能被3整除的有多少个
less than 1000,1000本身是不算的
所以应该是总数999减去能被3整除的数999/3,333个,
答案是666个

1000/3=999余1
被3整除的个数为999/3=333
不被3整除的个数为1000-333=667

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