How many digits are needed to write all of the integers from 1 to 1000 inclusive?（请写明过程）

how many natural numbers whose ten digits are smaller than the ones digits are there from 10 to 99?翻译这句话. how many even three-digit integers haver the property that their digits ,read left to right ,are strictly increasing order? How many non zero digits are there in the hexadecimal number system?1.152.103.84.165.None of these How many digits are needed to write all of the integers from 1 to 1000 inclusive?（请写明过程） 英语翻译In the integer 3589 the digits are all different and increase from left to right.How many integers between 4000 and 5000 have digits that are all different and that increased from left to right? How many 3 digits numbers have exactly one digit 5 in them?ji how many bears are How many derks are how many trees are how many books are In the integer 3589 the digits are all different and increase from left to right.How many integers between 4000 and 5000 have digits that are all different and that increase from left to right?这是一道填空题,不理解题目意思,求地道翻 Of the three-digit integers greater than 700 ,how many have two digits that are equal to each other and the remaining digit different from the other two?a/ 90b/ 82c/ 80d/ 45e/ 36 How many digits does the product 2516(25的16次方）*238（2的38次方）have? Of the two-digit positive integers less than 20 how many have different digits翻译翻译〜〜 how many legs are there? how many stop are there How many pears are there? How many stars are there?