## What is the mean of the prime number between 20 and 30?

question_answer Answers(1) = 26.

**What is the average of all prime numbers between 20 and 40?**

30

The mean of all of the prime numbers between 20 and 40 is 30.

**What are the prime numbers between 21 and 30?**

Correct answer: (b) The prime numbers between 21 and 30 inclusive are 23 and 29 – two prime numbers out of ten integers.

### What are the even numbers between 20 and 30?

22,24,26&28 are the even numbers between 20&30.

**How many whole numbers are there in 20 and 30?**

Answer: Whole No. Between 20and 30 are: 21,22,23,24,25,26,27,28,29.

**What are the composite numbers between 23 and 30?**

4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42, 44, 45, 46, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 81,82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 98, 99, 100.

#### Are there any prime numbers between 20 and 30?

The numbers between 20 and 30 are: #21, 22, 23, 24, 25, 26, 27, 28, 29#. Even numbers, other than #2# are not prime because by definition of being even they are divisible by #2#. This then leaves:

**How many prime numbers are there in the world?**

Prime Number. A prime number (or a prime) is a natural number that has exactly two distinct natural number divisors: 1 and itself. 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.

**Which is an example of a prime number?**

A prime number (or a prime) is a natural number that has exactly two distinct natural number divisors: 1 and itself. 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.

## Are there any prime numbers that are not even numbers?

No even number is a prime number (except 2). Hence, 20, 22, 24, 26, 28 and 30 are not prime numbers. Out of the rest (21, 23, 25, 27 and 29): 21 and 27 are divisible by 3, so they are not prime numbers. Neither is 25, as it is divisible by 5. Only 23 and 29 are left, and both are prime numbers.