[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.

How many prime numbers are there between 21 and 40?

Explanation. The prime numbers in the range 21 40 are 23 , 29 , 31 , and 37 .

What are the twin primes between 20 and 40?

Answer: The twin prime number between 20 to 40 are – 15, 30,35.

What is the number between 20 and 40?

Composite numbers between 20 and 40

21, 22, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40.

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

As,we know that all the prime numbers between [20] and [40] are as follows : [23],[29],[31],[37]. Hence,the mean of all the prime numbers between [20] and [40] is [30].

What are the factors between 20 and 40?

The factors of 20 and 40 are 1, 2, 4, 5, 10, 20 and 1, 2, 4, 5, 8, 10, 20, 40 respectively.

How many whole numbers are there between 20 and 40?

R D Sharma – Mathematics 9

The whole numbers:22, 23, 24, 25,26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50.

What are the prime numbers between 40 and 60?

The prime numbers between 40 and 60 are 41, 43, 47, 53, and 59.

What are prime numbers between 30 and 40?

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.

How many prime numbers are there between 20 and 50?

So, 23, 29, 31, 37, 41, 43 and 47 these are the prime numbers between 20 and 50.

What are the prime numbers between 20 and 30?

The prime numbers between 20 and 30 are 23 and 29.

What is a prime number between 40 and 50?

Correct answer:

(a) The primes between 40 and 50 are 41, 43, and 47 – three.

How many composite numbers are there between 20 and 40?

So, we have the list of composite numbers between 20 and 40 as 20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39 and 40. Note: We must notice that all even numbers are divisible by 2. Hence, we can say that all even numbers are composite numbers.

What are the prime numbers from 1 to 40?

Between 1 and 40 prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37.

What are all the prime numbers?

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.

What is the LCM of 20 and 40?

Answer: LCM of 20 and 40 is 40.

What is the HCF of 20 40?

The HCF of 20 and 40 is 2.

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