With reviewed papers that have generated several design solutions using TRIZ, almost all of them employed AHP as their method for selecting their best design. Vinodh 2014 used the multi-criteria decision making (MCDM) approach, in this case the AHP approach, to select the best design out of the designs that have been generated as a solution to the problem. A hierarchy was constructed and the criteria for the best design were identified. The opinions of experts were collected in order to carry out the pairwise comparison of the criteria, and the weights were calculated accordingly. In order to confirm that the judgement was acceptable, the consistency ratio CR was calculated. Rosli 2013 also used AHP in the selection process of their best design, utilizing the Expert Choice software to aid in this process. The pairwise comparisons were done using the author's experiences and their knowledge.  After the design solutions were prioritized, Rosli 2013 went further, by selecting the highest ranking design solutions that are compatible in design and combining them into one final design of which they were satisfied with. In addition, Chakroun 2014 has also applied AHP in order to select their best design.