5, 11, 17
9
5
13, 21 - it is the Fibonacci sequence
7, 6.
17
100 200 20
They are a sequence of odd numbers. The next three in the sequence would be 17,19 & 21
This list of numbers is the list of prime numbers. Following 11, the next two numbers in the list are 13 and 17.
Assuming the sequence of numbers declines by 5 each time, the next three numbers would be 40, 35 and 30.
These are all prime numbers. The next one is 17
The pattern is to divide by 5, so the next number would be 40