1,3,7,9,11,13,17,19,21,23,27,29,31,33,37,39…, ,91, 93,97 ,99… 991, 993, 997, 999
There are 4 in each row of 10, so how many rows are there in 1000? 100. 100 multiply by 4 is 400 so there are 400 solutions.There are 1,000 positive integers between 1,000 and 9,999, inclusive, that are divisible by nine.
332
334 of them.
From 1 (inclusive) to 1000(inclusive,) 750.
There are 2828 integers between 1000 and 9999.
There are 1,000 positive integers between 1,000 and 9,999, inclusive, that are divisible by nine.
332
334 of them.
From 1 (inclusive) to 1000(inclusive,) 750.
Oh, dude, let me break it down for you. So, first, you find how many numbers are divisible by 6, which is 166. Then you find how many are divisible by 21, which is 47. But wait, don't forget to subtract the ones divisible by both 6 and 21, which is 7. So, the total is 166 + 47 - 7 = 206 integers that fit the bill. Easy peasy!
you can say that 2/10 of every 10 integers is divisible by 5, so multiplying 2/10 by 100, giving you 200/1000 total integers are divisible by 5. half of all integers are odd, so divide 200/1000 by 2 is 100/1000, so you can correctly state that 100 odd integers under 1000 are divisible by 5.
333 integers.
There are 90 integers less than 1,000 that are divisible by 11.
There are 2828 integers between 1000 and 9999.
666 integers.
There are 130 positive integers less than 1,000 that are divisible by seven but not divisible by 11
There are 10 palindromes divisible by 9 between 1000 and 9999.