Which is the greater quantity?

(a) The number of prime numbers between 1 and 20 inclusive

(b) The number of composite numbers between 21 and 30 inclusive

Which is the greater quantity?

(a) The number of prime numbers between 70 and 110

(b) The number of prime numbers between 80 and 120

Which one is greater?

The number of prime numbers between and

The number of prime numbers between and

Which one is greater?

The number of prime numbers between and

The number of prime numbers between and

, and and are positive integers.

is a prime number; is not a prime number.

Which is the greater quantity?

(a)

(b)

Multiply the least and greatest primes between 80 and 100.

Which is the greater quantity?

(A) The number of composite integers between 41 and 50 inclusive.

(B) The number of prime integers between 41 and 50 inclusive.

and are prime integers. and . What is the minimum value of ?

Which is the greater quantity?

(A) The sum of the even integers from 21 to 30 inclusive

(B) Three times the sum of the prime integers from 21 to 30 inclusive

Which one is greater?

The smallest prime number greater than multiplied by the smallest prime number greater than .