## To determine if primes come in groups of 7's, 9's, or 11's, we first need to understand what primes are. Prime numbers are numbers greater than 1 that are divisible only by 1 and themselves.

Let's analyze each case:

1. 7's: There is no pattern in the distribution of prime numbers that makes them commonly occur in groups of 7. Although there might be occasional clusters of prime numbers close to 7, they are not consistently distributed.

2. 9's: Similar to the case of 7's, there is no specific pattern that causes prime numbers to occur in groups of 9. Their distribution is random, and they don't align with multiples of 9.

3. 11's: Unlike the previous two cases, there is an interesting pattern regarding primes and groups of 11, known as the prime gap. It is observed that there can be no prime number in multiples of 11, except for 11 itself. For example, between 11 and 22, there are no prime numbers. However, this pattern is not consistent for all multiples of 11.

In summary, while prime numbers do not occur in groups of 7's or 9's, there is a specific pattern about multiples of 11 and prime gaps.