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

Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 
| Understanding |
|
The horizontal line is shifting downwards in each step but not the element that is exactly beween the letters in that line. For every even numbered step, the two letters at extreme left end of the horizontal line are interchanging their position with each otherwhile the letters at extreme right end are interchanging their positions with each other. Example: MN becomes NM and OP becomes PO. For every odd numbered step, the pair of letters at extreme left end of the horizontal line are interchanging their position with the pair of letters at the extreme right end. Example: NM will be replaced by PO and PO will be replaced NM. From step 2, the element in the vertical line that will be also lie exactly between the horizontal line, randomly get changed with a new element. Example: In step 2, 3 → A In step 3, 4 → 6, In step 4, 1 → U...and so on. |