Which one of the four figures given below should come in place of the question mark (?), if the sequence is continued?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) →

The series runs as two alternating series, (A), (C), (E) and (B), (D), (F):
The extra line turns through 45° anticlockwise at every second step. Inside the rectangle it goes from slanting (A) to upright (C) to slanting the other way (E); the two outside lines go from level (B) to slanting (D), so in (F) they stand upright, above and below the rectangle.
The small circle moves a quarter turn clockwise round the rectangle at every second step. In (A), (C), (E) it goes from below to the left to above; in (B), (D) it goes from above to the right, so in (F) it comes below the rectangle.