In each of the following questions series begins with unnumbered figure on the extreme left. One and only one of five numbered figures in the series does not fit into the series. The two unnumbered figures one each on the extreme left and the extreme right fit into the series. You have to take as many aspects into account as possible of the figures in the series and find out one and only one of the five numbered figures which does not fit into the series. The number of that figure is the answer.