2/5 are prime, 8/15 are composite (and 1/15 is neither).
2/5 of the numbers from 1 to 20 are prime numbers
There are 15 prime numbers between 1 and 49
Prime numbers from 1 to 15 are 2, 3, 5, 7, 11 and 13.
There are 15 prime numbers in between 1 and 52. 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47
2/5 are prime, 8/15 are composite (and 1/15 is neither).
It is 15/50 = 3/10.
3/10 are prime.
2/5 of the numbers from 1 to 20 are prime numbers
There are 15 prime numbers between 1 and 49
Prime numbers from 1 to 15 are 2, 3, 5, 7, 11 and 13.
No, they are composite numbers. The factors of 15 are 1, 3, 5, and 15. The factors of 33 are 1, 3, 11, and 33. Prime numbers have two factors: 1 and the number itself, so 15 and 33 cannot be prime.
Oh, dude, let me break it down for you. So, prime numbers are like those special numbers that are only divisible by 1 and themselves, right? So, between 1 and 25, we've got 9 prime numbers: 2, 3, 5, 7, 11, 13, 17, 19, and 23. And since there are like 25 numbers in total, the fraction of prime numbers is 9/25. Math can be fun, right?
There are 15 prime numbers in between 1 and 52. 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47
11+3+1=15 but 1 is not a prime number. 3 + 5 + 7 = 15
15 of them.
The prime factors of 15 are 3 and 5 because 3 and 5 are prime numbers that divide evenly into 15. 1 is a factor of 15, but it is not a prime number.