If cos 2x = 1/2, then the value of

From the given question, find which figure comes after the four figures which are in series?

Some equations have been solved on the basis of certain system. Find the correct answer for the unsolved equations on that basis:

Select the figure from among the given options that can replace the question mark (?) in the following series.

Select the figure which will come next in the following figure series.

Select a figure from amongst the Answer Figures which will continue the same series as established by the five Problem Figures.

Find the question mark ? figure from answer figure.

Select the figure that will come next in the following series.