How many 4 digit numbers can be formed using the digits 9 8 7 6 5 if no digits are repeated?

How many 4 digit numbers can be formed using the digits 9 8 7 6 5 if no digits are repeated?

Answer: → 4 digits numbers can be arranged in = 4! = 4 * 3 * 2 = 24 ways . therefore, → Total number of ways = 15 * 24 = 360 (Ans.)

How many 4 digit numbers can be formed using the numbers 5 6 7 and 8?

How many 4-digit numbers can be formed using 5, 6, 7 and 8 if the digits cannot be repeated? How many 4-digit numbers can be formed using 5, 6, 7 and 8 if the digits cannot be repeated? If they are 3-digit numbers to be formed, they will be 4!= 24.

How many ways can you arrange 6 things?

720 arrangements
So the six letters can be a combination of 6×5×4×3×2×1 letters or 720 arrangements.

How many six digit numbers are there in which no digit is repeated?

Hence, the answer is 1440.

How many 4 digit numbers are there in all Class 6?

9000 four
The smallest 4 digit number is 1000 and the greatest 4 digit number is 9999. There are 9000 four-digit numbers in all.

How to figure out how many combinations you have?

If we want to figure out how many combinations we have, we just create all the permutations and divide by all the redundancies. In our case, we get 336 permutations (from above), and we divide by the 6 redundancies for each permutation and get 336/6 = 56. The general formula is

How many ways to re-arrange 3 people?

Well, we have 3 choices for the first person, 2 for the second, and only 1 for the last. So we have 3 ∗ 2 ∗ 1 ways to re-arrange 3 people.

How many possible pairs of letters are there?

There are 26 choices for the first letter. For each of these letters, there are 26 choices for the second letter. There are therefore 26X26 = 676 possible pairs of letters.

How many different digits are there in X1?

There are 26 choices of letters. Each of these 26 letters can be followed by one of 10 different digits–0, 1, 2, 3, 4, 5, 6, 7, 8, 9. Therefore there are 26 x1 0 = 260 different plates which can be made.