Inserting The Missing Character

Concept

        In such type of questions, a figure, a set of figures, an arrangement or a matrix is given, each of which bears certain characters, be it numbers, letters or a group/combination of letters/numbers, following a certain pattern. The candidate is required to decipher this pattern and accordingly find the missing character in the figure.

Example

Q1: Find the missing character from among the given alternative?

alt

A) 190

B) 221

C) 236

D) 255

Answer is: 

We have :-  7 x 2 + 1 =  15,

                 15 x 2 + 1 = 31,

                 31 x 2 + 1 = 63,

                 63 x 2 + 1 = 127

So, missing number is (127 x 2 + 1) = 255.