Table of Contents

## How many 4 digits numbers can be formed by using the digits 2 4 6 8 when repetition of digits is allowed?

∴ Total numbers = 4 + 12 + 24 + 24 = 64 numbers.

**How many 3 digit numbers can be written using 1/2 and 3 What is the probability of the numbers with same digits?**

digits are 3, and number of places are 3. The calculation will be 3!/0!, which is equal to 3!= 6. So 6 3-digit numbers can be formed using 1,2,3!!!

**How many 3 digit numbers can be written from the digits 1,2 3 and 4 if repetition of digits is allowed?**

So the number of 3-number combinations are- (1,2,3),(1,2,4),(1,3,4),(2,3,4). Each can be arranged in 6 ways, so we get 24 ways totally.

### What is the sum of all 4 digit numbers that can be formed using all the digits 2 4 6 8?

The sum of all 4 digit number containing the digits 2, 4, 6, 8, without repetitions is. 133330.

**What is the sum of all the 4 digit numbers which can be formed with the digits 2/3 4.6 without repetition?**

So answer=275000+220000+22000+2200=519200.

**How many 3 digit numbers can be formed by using the digits from 0 to 9 with repetition?**

How many 3-digit numbers can be formed by using the digits 1 to 9 if no digit is repeated? Therefore, total numbers =89×8×7504.

#### How do you find the sum of all four digit numbers?

To find the sum of all the four digit numbers formed using the digits 2,3,4 and 5 without repetition: We can form a total of 4! or 24 numbers. When we add all these numbers, let us look at the contribution of the digit 2 to the sum. When 2 occurs in the thousands place in a particular number, its contribution to the total will be 2000.

**What is the sum of all possible numbers using n distinct digits?**

“ If all the possible n-digit numbers using n distinct digits are formed, the sum of all the numbers so formed is equal to (n-1)! x {sum of all the digits} x {111…….} n times. Example 1: What would be the sum of all the numbers which can be formed by using the digits 1, 3, 5, 7 all at a time and which have no digits repeated?

**What is the sum (summation) calculator?**

The Sum (Summation) Calculator is used to calculate the total summation of any set of numbers. In mathematics, summation is the addition of a sequence of any kind of numbers, called addends or summands; the result is their sum or total. How to use Sum (Summation) Calculator Video

## How can we make 6 numbers using 3 digits?

We can make 6 numbers using 3 digits and without repetitions of the digits. LOOK AT THE TREE DIAGRAM ABOVE. We have 3 choices for the first digit, 2 choices for the second digit and 1 choice for the third digit. There is a special notation for the product 3 × 2 × 1 = 3! and it is read 3 factorial. We also define 0! = 1.