Select 20 unique numbers from 1 to 721
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 454,033,820,702,594,083,919,198,930,825,556,000,768 (~4.5403382070259E+20 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 1,104,619,794,167,453,730,595,222,152,264,769,499,174,386,711,027,337,134,080 (~1.1046197941675E+39 million trillion)
If order does not matter (e.g. most lottery numbers): 454,033,820,702,594,083,919,198,930,825,556,000,768 (~4.5403382070259E+20 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 1,104,619,794,167,453,730,595,222,152,264,769,499,174,386,711,027,337,134,080 (~1.1046197941675E+39 million trillion)
