Three numeric series are given as follows.

Series 1): 19, 77, 388, 2333, 16338

Series 2): 3, a, b, c, d

Series 3): p, q, r, s, t

If it is mentioned that all the above three series follow the same pattern and [(b/2) + 4] = q, then what will be the difference between “q” and “s”?