Combinatorics, a type of calculation that traditional computers have trouble with, is one such challenge. These calculations involve arranging elements in a way that achieves a particular objective. As the number of things increases, so does the number of possible combinations. To find the ideal arrangement, today’s digital computers must loop through each permutation until an outcome is found, and then determine which is the most effective at achieving the goal. In many circumstances, this will demand a large number of calculations. Combinatorics calculations prove problematic in a variety of sectors, ranging from banking to pharmaceuticals. Quantum computers come into play here. Quantum computing reduces the cost of calculating difficult combinatorial problems in the same way as classical computers have reduced the cost of arithmetic.