# How many possible combinations are there for a 5 digit number?

## How many possible combinations are there for a 5 digit number?

Assuming no five-digit number can begin with zero, there are 9 possible choices for the first digit. Then there are 10 possible choices for each of the remaining four digits. Therefore, you have 9 x 10 x 10 x 10 x 10 combinations, or 9 x 10^4, which is 90,000 different combinations.

### How many combinations of 3 numbers can 5 numbers make?

So 5 choose 3 = 10 possible combinations.

How many five digit numbers can be formed from the digits 0 1,2 3 and 4 if repetitions are not allowed?

There are 2520 different numbers. 6×6×5×4×3 = 2160 five digit numbers can be formed.

How many combinations are possible with 3 numbers?

How many combinations can be made with 3 numbers? There are, you see, 3 x 2 x 1 = 6 possible ways of arranging the three digits. Therefore in that set of 720 possibilities, each unique combination of three digits is represented 6 times.

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## What is smallest number using 3 digits?

If we only have three digits to spare, the smallest possible number is 0.01. With four digits, it’s 0.001. You’ll notice a pattern here: the significand is always the same, only the exponent changes. What we need is a significand of 1, because that’s the smallest one after 0.

### How many 3 digit numbers are divisible by 3?

The first three-digit number that is exactly divisible by 3 is 102 and the last is obviously 999. The numbers 102, 105, 108., 999 form an arithmetic progression with common difference, d = 3. There are 300 three-digit numbers that are divisible by 3 and there are 900 three-digit numbers.

How many combinations can you make with six digits?

Using the digits 0 to 9, with no number repeating itself, 151,200 possible combinations of six digits. However, if a true number is required, meaning 0 cannot be the first digit, only 136,080 combinations are available.