## How many positive 4 digit numbers are there?

9000

## How many 4 digit numbers contain at least one 8 or 9?

Therefore, we have 8 choices (1 to 9, except 3) for the first digit, and 9 choices (0 to 9, except 3) for each of the other 3 digits. Therefore, 8 * 9 * 9 * 9 = 5832 4-digit numbers are possible without a digit 3. Therefore, number of 4-digit numbers containing at least one digit 3: = 9000 – 5832 = 3168.

**How many 4 digit numbers can be formed using the digits?**

There will be as many 4-digit numbers as there are permutations of 5 different digits taken 4 at a time. 5 5 4 5 1 P ! ! ! ! = 5 × 4 × 3 × 1 × 1 = 120 Among the 4-digit numbers formed by using the digits, 1, 2, 3, 4, 5, even numbers end with either 2 or 4.

**How many 4 digit numbers are there in which all 4 digits are even?**

If the number ends with a 0 then there are 9 choices for the first digit, 8 for the second and 7 for the third, which makes 1×9×8×7=504 possibilities. Together, this gives 2296 numbers with 4 distinct digits that are even.

### How many 4 digit number can be made using 0 with no repeated digits allowed?

Originally Answered: How many 4-digit combinations are possible using 0-9 without repeating any numbers? 5,040. If we were choosing any 4-digit number, we would have 10 choices for the first, 10 for the second, 10 for the third, and 10 for the fourth.

### Is zero an even number?

The use of the phrase “even number, or the number zero” implies that zero is not even. On the other hand, the mayor is lumping zero together with the even numbers, so he certainly doesn’t think it’s odd. So what is it – odd, even or neither? For mathematicians the answer is easy: zero is an even number.