Just one of them and it is 113 and so the answer is b.
There are 800 such numbers.
No. There are infinitely many rational numbers between any two integers.
There are an infinite number of prime numbers which are consecutive odd integers. Choose any natural number n. Take all primes up to any number n, take their product, and add 1 and subtract 1 from it. These 2 numbers are consecutive odd integers. eg 2*3*5*7 = 210 209 and 211 are primes which are consecutive odd integers.
Yes. All prime numbers and composite numbers are positive integers, or whole counting numbers. That leaves infinitely many numbers that are neither prime nor composite. If you intended to narrow the scope of your question to the whole counting numbers or to the positive integers, then there are NO such numbers that are neither. A counting number, however large, will be either prime or composite.
3, 5, 9, 11, 13 5 of them.
There are 800 such numbers.
The numbers 23 and 29 are the only prime numbers between 20 and 30
8.
An integer is a whole number ( a number with no decimal places ) so there are 20 integers. 21 if you include the 0.
No. There are infinitely many rational numbers between any two integers.
500 of them.
There is only 1.
There are an infinite number of prime numbers which are consecutive odd integers. Choose any natural number n. Take all primes up to any number n, take their product, and add 1 and subtract 1 from it. These 2 numbers are consecutive odd integers. eg 2*3*5*7 = 210 209 and 211 are primes which are consecutive odd integers.
3, 5, 9, 11, 13 5 of them.
Yes. All prime numbers and composite numbers are positive integers, or whole counting numbers. That leaves infinitely many numbers that are neither prime nor composite. If you intended to narrow the scope of your question to the whole counting numbers or to the positive integers, then there are NO such numbers that are neither. A counting number, however large, will be either prime or composite.
There are 21 prime numbers between 100-200.
There is one prime number between 90 and 100. It is 97.