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What are the composite numbers between 20 and 25?
The composite numbers between 20 and 25 are 21, 22, and 24. 23 is the only prime number between 20 and 25.
A card is drawn from a deck of cards 1 to 20 the card is not replaced and another is drawn what is the probability that a prime number is drawn and then composite number?
There are 8 prime numbers (2, 3, 5, 7, 11, 13, 17, 19) between 1 and 20, the rest are comp. P(prime then comp) = (8/20) * (11/20) = .22 There is a 22% chance you will draw a prime number followed by a composite number. ...maybe...
Which of these numbers is prime 20 21 22 23 24?
The prime number is 24
Prime numbers between 20 and 25?
22 and 24 theoretically.
What is the smallest prime number that is greater than 20?
21 = 3x7 ... not prime. 22 = 2x11 ... not prime. 23 is prime. 23.
What is a prime factor of the composite number 20?
2 and 5
What number is halfway between 18 and 22?
The number halfway between 18 and 22 can be found by taking the average of the two numbers. Adding 18 and 22 together gives us 40, and dividing by 2 gives us 20. Therefore, the number halfway between 18 and 22 is 20.
What is the prime number after 22?
The prime number about 22 is 23. 23 is a prime number because it has no factors except for 23 and itself.
What date is not a prime number between 1 31?
4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30
Why isn't 22 a prime number?
A number is prime if its ONLY factors are 1 and the number that you are testing. 22 has factors of 22 & 1, as well as 2 & 11. By the way, 2 is the only even prime number.
Is a twenty-two prime a number?
A prime number is a number which can only be divided by one or the number itself. The number 22 can be divided by one, two, eleven and 22. Thus, it is NOT a prime number
Which of these numbers prime 20 or 21 or 22 or 23 or 24?
You can work this out, Prime numbers can only be divided by themselves or 1. Therefore as 20 can be divided by 2 it it not prime. The same is true for 22 and 24. Thus the prime must be either 21 or 23. See if either of these numbers can be divided by 7, if it can then the prime must be the other number.
