The prime numbers between 23 and 49 are: 23, 29, 31, 37, 41, 43, 47
The only numbers between 30 and 50 that could be prime are 31, 33, 35, 37, 39, 41, 43, 45, 47, 49 because all other numbers are even. 35 and 45 cannot be prime because they are divisible by 5. 33 is divisible by 3, so it is not prime, and 49 is divisible by 7, so it is not prime. That leaves numbers 31, 37, 41, 43, 47, so there are five prime numbers between 30 and 50.
41, 43, and 47
29, 31, 37, 41, 43, 47
Well, if you think about it, a prime can never end in 4, because then it would be divisible by 2. So the only numbers you need to check are 41, 43, 45, 47, and 49. Can you take it from there?
The composite numbers between 41 and 50 are:42, 44, 45, 46, 48, 49, 50The other numbers in the list, 41, 43, 47, are prime.
43 45 47 49
There are 4 prime numbers between 36 and 49. 37, 41, 43, and 47.
The prime numbers between 23 and 49 are: 23, 29, 31, 37, 41, 43, 47
The only numbers between 30 and 50 that could be prime are 31, 33, 35, 37, 39, 41, 43, 45, 47, 49 because all other numbers are even. 35 and 45 cannot be prime because they are divisible by 5. 33 is divisible by 3, so it is not prime, and 49 is divisible by 7, so it is not prime. That leaves numbers 31, 37, 41, 43, 47, so there are five prime numbers between 30 and 50.
The composite numbers between 41 and 50 are: 42, 44, 45, 46, 48, 49, 50.
41, 43, 47
41, 43, and 47
First, the only candidates are odd, so 41, 43, 45, 47, 49 45 is divisible by 5, and 49 by 7, leaving 41, 43, and 47 Now, you can try to divide these number by all of the odd numbers between 3 and themselves (as a simple algorithm), but you will not find that they are divisible by any number other than one and themselves. So, 41, 43, and 47 are prime.
42, 44, 45, 46, 48, 49, 50
5,19, 29, 61, 41, 127 10 is divisible by 2 so not prime 49 is divisible by 7 57 is divisible by 3
6...they are 39-41-43-45-47 and 49