Find the question mark ? figure from answer figure.

The figure may be labelled as shown.

The simplest triangles are GLK, DLJ, DJM, HMN, QRE, IRA, IPA and FPO i.e. 8 in number.

The triangles having two components each are BDO, CDQ, DLM, PRA, KFI, NEI, HJI, GJI, DKI and DNI i.e. 10 in number.

The triangles having four components each are DIE, DFI, DOA, DQA andGHI i.e. 5 in number.

The triangles having six components each are DCA and DBA i.e. 2 in number.

DEF is the only triangle having eight components.

ABC is the only triangle having twelve components.

Thus, there are 8+10+ 5 + 2+1 + 1 = 27 triangles in the figure.

The upper element moves to the lower position; changes its size (reduces in size if initially larger and enlarges if initially smaller); gets laterally inverted and its circular part changes colour (becomes black if initially white and vice-versa). The lower element moves to the upper position; changes its size (reduces in size if initially larger and enlarges if initially smaller); rotates through 180 ^o and its circular part changes colour (becomes black if initially white and vice-versa).

All other figures contain two circles, two triangles, one square, one rectangle and one ellipse while fig. (4) contains two squares.

Figure (4) is formed by four line segments while each one of the other figures is formed by three line segments.

The figure may be labelled as shown.

The simplest triangles are AEH, EHI, EBF, EFI, FGC, IFG, DGH and HIG i.e. 8 in number.

The triangles composed of two components each are HEF, EFG, HFG and EFG i.e. 4 in number.

Thus, there are 8 + 4 = 12 triangles in the figure.