This paper is dealing with an optimization problem by using the meta heuristic approach in which the demand of delivery customer can be met by a relatively large number of pickup customers and by optimal tour the authors mean the shortest trajectory or the minimum distance among the nodes of wireless sensors.
1) The facility with numbers and calculations, 2) The art of avoiding unnecessary calculations, 3) Memorizing formulas and theorems, 4) Understanding and finding proofs, 5) Solving problems with well-described procedures, 6) Solving problems for which there are no well-described procedures, 7) Understanding abstract mathematical concepts, 8) Creating new mathematical concepts, and clarifying and refining old ones.