Every number from 1,000 to 9,999 can be made from the digits 0 - 9.
That means 10,000 numbers (0 through 9,999), minus the first 1,000 (0 through 999),
for a total of 9,000 numbers.
You can easily list them all. Simply write down all the counting numbers from 1,000 to 9,999 .
9999876
1324
The largest 4-digit number with two different digits is 9998. Its successor is the next number, which is 9999. However, 9999 has only one digit (9), so we need to find the next valid 4-digit number with two different digits. This number is 10000, which is technically a 5-digit number, so the largest valid number with two different digits before 9999 is 9998, and its successor cannot be a 4-digit number with two different digits. Thus, there is no valid successor that meets the criteria.
3201
Well, honey, let me break it down for you. When you multiply a 4-digit number (ranging from 1000 to 9999) by a 1-digit number (ranging from 0 to 9), the result can be a 3-digit number (ranging from 0 to 8991). So no, the product of a 4-digit number and a 1-digit number is not always a 5-digit number. Math doesn't discriminate, darling.
9876 (:
1357
1023
9999 is the 4-digit number and 999 is the 3-digit number.
The smallest 4-digit number is 1000, and the largest 4-digit number is 9999.
This is not true. Think about any 4 digit multiplied by 1. This remains a 4 digit. In the case of any 4 digit under 5000, multiplied by two would also be a 4 digit number
9,876