The_Big_KWelcome to CE, #-Link-Snipped-# ! We're happy to have you with us. Tell us how did you discover this website and what motivated you to become a part of it?...

Hi to every one!!!😀 I am Anbarasu studying final year mechanical engineering.. I wanted to be a part of the crazy engineers..

X=6 consider the series as a,b,c,d,e,f,g,... 4th number is a, 8th number is b, 12th number is c, 16th number is d... So, 40th number is k (i.e., k=6).