Table of Contents

- 1 How many three digits odd numbers can be formed from the digits 1 2 3 4 5 if digits Cannot repeat?
- 2 How many odd 3 digit numbers are there?
- 3 How many odd numbers of 3 digits are there which have all 3 digits distinct?
- 4 How many odd numbers can be formed?
- 5 Which is the sum of odd numbers beginning with 1?
- 6 When is an odd number not a multiple of 2?

## How many three digits odd numbers can be formed from the digits 1 2 3 4 5 if digits Cannot repeat?

How many 3-digit numbers can be formed from the digits 1, 2, 3, 4 and 5 assuming that repetition of the digits is not allowed. = m x n x p = 5 x 4 x 3 = 60.

## How many odd 3 digit numbers are there?

And for the first digits we can place digits in the range 1… 9 but we cannot place the digits that are used in the two other digits and we can place only 7 digits. However the result is not correct, because there are 320 odd three-digits numbers with different digits.

**How many odd numbers of three digits each can he formed from the digits 2 4 6 and 7 if repetition of digits is permitted?**

Hence total possible conditions of an odd 3 digit number under the given conditions with repetition being allowed would be 3.7.

**How many 3 digit odd numbers can be formed if no digit can be repeated?**

I know the answer is 5⋅8⋅8=320.

### How many odd numbers of 3 digits are there which have all 3 digits distinct?

Thus there are 60, 3 digit numbers, with distinct digits, with each of the digits odd.

### How many odd numbers can be formed?

=72 possible numbers that are odd and the chance that a number is odd is 72120=35.

**How many 3 digit odd numbers can be formed?**

How many 3-digit odd numbers can be formed using the digits 1, 2, 3, 4, 5, 6, 7, 8, 9 if no repetitions of digits are allowed? To form an odd number the rightmost digit of a number should be an odd one. So in this case only 1, 3, 5, 7, 9 can take the rightmost place. You can see, it is possible in 5 ways: either one of 1, 3, 5, 7, 9 at a time.

**Which is the only odd number greater than 30, 000?**

So the first digit can’t be 2 (the answer has to be greater than 30,000) or 7, which is the only odd number and so has to be saved to be the 5 digit of the answer. Which leaves 4, 6, or 8 as the first digit.

## Which is the sum of odd numbers beginning with 1?

The total of any set of sequential odd numbers beginning with 1 is always equal to the square of the number of digits, added together. If 1,3,5,7,9,11,…, (2n-1) are the odd numbers, then; Sum of first odd number = 1. Sum of first two odd numbers = 1 + 3 = 4 (4 = 2 x 2). Sum of first three odd numbers = 1 + 3 + 5 = 9 (9 = 3 x 3).

## When is an odd number not a multiple of 2?

An odd number is an integer which is not a multiple of 2 If these numbers are divided by 2, then there will remainder left In the number line, 1 is the first positive odd number