17 cause it is the next prime number
The numbers are all prime in increasing order. The next number is 17.
28 (add on the prime number 11)
17 is a prime number - the next composite number after 17 is 18.
Check the differences between each two numbers... write the answers down and you will see the pattern. Good Luck!
The next number in the sequence would be 23. The sequence consists of prime numbers.
15? ================= I'm guessing this is a list of the prime numbers? So the next number would be 17.
The next number is 27. Nice puzzle! The reason is on discussion page, for those who are still working on it.
It is 129.
Think it's 30...then 20
27, 26, 37, 37
From the pattern (n + 4, n + 2, n + ?) I would say the next following number is 20 (n + 1).
I think 37. But that is only if the third number is wrong.
If you eliminate the first number, the rest are prime and the next one would be 29.