In following questions, a sequence of groups of alphabets and numbers is provided with one term missing , Choose the missing term from options.

2A11, 4D13, 12G17, ?

A. 36I19
B. 48J21
C. 36J21
D. 48J23
Answer: D . 48J23


The first numbers in the terms follow the sequence x 2, x 3, x 4.
The middle letter of each term is moved three steps forward to obtain the corresponding letter of the next term>
The last numbers follow the sequence + 2, + 4, + 6.