There are 45 prime numbers that are less than 200 (including '1'.)
There are 49 composite numbers between 200 and 250. Composite numbers are integers greater than one that are not prime, meaning they have more than two distinct positive divisors. In this range, the composite numbers include 200, 201, 202, and so on, up to 250, excluding the prime numbers within that interval.
Numbers up to 200 divisible by both 2 and 3 = numbers to 200 divisible by 2*3 = 6 which is int(200/6) = int(33.33) = 33
There are 25 prime numbers up to 100.
19,29,59,79,89 are the prime numbers with 9 in its Unit place.
Look up a list of prime numbers (a Google search for "prime numbers" or "list of prime numbers" should do); every number (greater than 1) that is NOT a prime number is composite.
There are 15 prime numbers up to 50.
There are exactly 200 of them.
127 prime numbers in that range. See related link for prime numbers up to 10000. Plus there is a link to download Zip files of prime numbers up to 1 million.
Eight of them.
The first two prime numbers add up to another prime number.
Numbers up to 200 divisible by both 2 and 3 = numbers to 200 divisible by 2*3 = 6 which is int(200/6) = int(33.33) = 33
There are 25 prime numbers up to 100.
46 of them.
Look up a table of prime numbers. All those numbers that are not prime, are composite - except 1, which is neither prime nor composite.
19,29,59,79,89 are the prime numbers with 9 in its Unit place.
Look up a list of prime numbers (a Google search for "prime numbers" or "list of prime numbers" should do); every number (greater than 1) that is NOT a prime number is composite.
There are 80 such numbers.