# What is the number between 20 and 30?

The composite numbers between 20 and 30 are: 20, 21, 22, 24, 25, 26, 27, 28, and 30. All the numbers between 20 and 30 are 20, 21, 22, 23, 24, 25,…

## How many prime numbers are there between 21 and 30?

Correct answer: Explanation: (a) The prime numbers between 1 and 20 inclusive are 2, 3, 5, 7, 11, 13, 17, 19 – eight total. (b) The prime numbers between 21 and 30 inclusive are 23 and 29 – two prime numbers out of ten integers.

## What are prime numbers between 1 to 20?

What are the prime numbers? There are 8 prime numbers under 20: 2, 3, 5, 7, 11, 13, 17 and 19. The first 10 prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29.

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## What is the sum of odd numbers between 20 to 30?

Answer Expert Verified As we’ve to find the average, First we’ll find the sum and divide the result by 5. Thus, average of odd numbers between 20 and 30 is 25.

## What is the greatest prime number between 20 and 30?

23 and 29 are the prime numbers between 20 and 30. No even number is a prime number (except 2). Hence, 20, 22, 24, 26, 28 and 30 are not prime…

## What are the odd numbers from 1 to 20?

The list of odd numbers from 1 to 100 is: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, 87, 89, 91, 93, 95, 97, 99.

## What is the sum of even numbers between 20 and 30?

There are only two primes between 20 and 30; they are 23 and 29. Therefore the required sum = 23 + 29 = 52.

## How many even number are there between 20?

(Excluding 20 and 50,there are 14 even numbers.) The numbers which are divisible by 2 are popularly known as the even numbers. Now,we just need to find the numbers between the 20 and 50,which are divisible by 2. The numbers will be 20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50.

## What are prime numbers between 30 and 40?

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The prime numbers between 30 and 40 are 31 and 37. All the other numbers (30, 32, 33, 34, 35, 36, 38, 39, and 40) are not prime numbers.

## Why is 29 a prime number?

The number 29 is divisible only by 1 and the number itself. For a number to be classified as a prime number, it should have exactly two factors. Since 29 has exactly two factors, i.e. 1 and 29, it is a prime number.

## What are the prime numbers between 20 and 40?

[20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40]. So, these are the numbers between [20] and [40]. [23,29,31,37] are the four numbers that do not have factors other than 1 and itself. Since these numbers [23,29,31,37]are divisible by themselves and 1, they are prime numbers.

## How many prime numbers are there between 1 and 25?

Answer: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97.

## How many prime numbers are there between 10 and 30?

Hence, the prime numbers between 10 and 30 are 11, 13, 17, 19, 23 and 29. So total there are 6 prime numbers between 10 and 30.

## What are the prime numbers between 50 and 60?

There are two prime numbers between 50 and 60. Those numbers are 53 and 59. All even numbers are divisible by 2. 51 and 57 are both divisible by 3.

## What is the prime numbers of 20?

The sum of all factors of 20 is 42. Its Prime Factors are 1, 2, 4, 5, 10, 20 and (1, 20), (2, 10) and (4, 5) are Pair Factors.

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## What is the odd prime number?

Any prime number other than 2 (which is the unique even prime). Humorously, 2 is therefore the “oddest” prime.

## Is 20 an even or odd number?

The list of even numbers from 1-100 is as follows: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70,72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100.

## What is the sum of the first 30 odd numbers?

The sum of the first 30 odd numbers is 900. We start by identifying the first 30 odd numbers: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29,…

## What is the formula of odd number?

To find the series of odd numbers we use the general odd number formula (2n+1). Here n represents the whole numbers. For identifying sum on n odd numbers we use formula n2 here n is a natural number.

## What are all the prime numbers less than 30?

Prime Number For example, there are 25 prime numbers from 1 to 100: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97.

## How many even numbers are prime numbers?

Even prime number: The only even prime number is 2. All other even numbers can be divided by 2 so other even numbers will have three factors as 1 , 2 and themselves so there is only one even prime number.