Choose the figure which is different from the rest.

   (1)     (2)     (3)     (4)     (5)

One circle is replaced by a new symbol in each step and this replacement takes place on either ends alternately. The complete figure rotates 45 ^oACW in each step.

In one step, one half-leaf is lost from the CW-end and three half-leaves are added at the ACW-end. In the next step, one half-leaf is lost from the CW-end and two half-leaves are added at the ACW-end.

In the first step, the elements at the four ends move in the sequence . In each subsequent step, the elements move in the sequence obtained by rotating the previous sequence through 90 ^oACW. Also, in each step, the element that reaches the encircled position gets replaced by a new element.

If we label the four elements in the figure as ; then the arrow at position 1-rotates 45 ^oACW and 135 ^oACW alternately; the element at position 2 rotates 90 ^oACW and moves to position 3 in each step; the element at position 3 rotates 90 ^oACW and moves to position 4 in each step and the element at position 4 moves to position 2 and gets replaced by a new element in each step.

In each step, the upper element is lost; the middle element reduces in size and becomes the upper element; the lower element enlarges and becomes the middle element and a new element appears at the lower position.

All other figures can be rotated into each other.

In each one of the figurers except fig. (3), the number of half-leaves is one more than the number of line segments.

All other figures can be rotated into each other.

Each one of the remaining figures is composed of straight lines only.

In each of the other figures, the lower element is the vertically inverted image of the upper element.