A natural number, if not prime, must be a composite number______ (judge right or wrong)

A natural number, if not prime, must be a composite number______ (judge right or wrong)

Because 1 is a natural number, neither a prime number nor a composite number, so a natural number, if not a prime number, must be a composite number is wrong, so the answer is: wrong

In the natural number, the prime number and even number are______ ．

In natural numbers, the number that is both prime and even is 2

In natural numbers, the number of prime numbers is less than that of composite numbers______ (judge right or wrong)

In natural numbers, the number of prime numbers is less than that of composite numbers

In natural numbers, except prime numbers, they are composite numbers. Right or wrong?

No, 1 is neither prime nor composite