Okay so to get to 8 from 5, you add 3.
Now to get to 14 from 8, you add 6.
Lastly, to get to 26 from 14, you add 12.
Do you see the pattern in 3,6,12? You're just doubling. So, next in the sequence would be 50 because you would add 24 to 26 (because 12 x 2 = 24)
I hope this helps! :)
