A Prime number is a number having exactly two factors, 1 and the number itself. All prime numbers except the number 2 are odd numbers.
Odds
The odds of choosing a prime number in the set [1-20] are 8 out of 20, as there are 8 prime numbers, 2, 3, 5, 7, 11, 13, 17, and 19, in that set.
To determine the number of prime numbers between 1 and 8888888888888888888888888888888888888888888888, we can use the Prime Number Theorem. This theorem states that the density of prime numbers around a large number n is approximately 1/ln(n). Therefore, the number of prime numbers between 1 and 8888888888888888888888888888888888888888888888 can be estimated by dividing ln(8888888888888888888888888888888888888888888888) by ln(2), which gives approximately 1.33 x 10^27 prime numbers.
To know what numbers are prime between 25-50, you'd have to figure out if any number besides 1 and that number itself can go into that number. Another key, is that all even numbers between 25 and 50 are NOT prime numbers. The only even number, that is prime is 2. So you'd have to go through all the odds between 25-50. For example: 27 is divisible by: 1,3,9, and 27 ~composite~ 29 is divisible by 1 and 29 ~prime~ Hope that helps!
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Odds
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Both. Because there are both even and odd prime numbers.
they are all odds
There are fewer prime numbers than odd numbers. Choose accordingly.
A prime number has only 2 factors which are 1 and itself. There is no better group, but there are more odds.
There are many, many more odd prime numbers than even prime numbers; there is only 1 even prime number, namely 2, whereas the odd prime numbers are 3, 5, 7, 11, ...
The odds of choosing a prime number in the set [1-20] are 8 out of 20, as there are 8 prime numbers, 2, 3, 5, 7, 11, 13, 17, and 19, in that set.
Odds
No, because 2 is prime. Otherwise the product of two odds is odd, and all primes are odd except 2.
yes