Select 100 unique numbers from 1 to 20
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 12,676,506,002,282,294,216,560,126,660,273,332,880,703,343,378,587,712,428,055,542,081,948,555,108,709,294,455,631,806,516,778,066,465,591,655,510,965,922,151,931,370,799,104 (~1.2676506002282E+112 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 12,676,506,002,282,294,216,560,126,660,273,332,880,703,343,378,587,712,428,055,542,081,948,555,108,709,294,455,631,806,516,778,066,465,591,655,510,965,922,151,931,370,799,104 (~1.2676506002282E+112 million trillion)
If order does not matter (e.g. most lottery numbers): 12,676,506,002,282,294,216,560,126,660,273,332,880,703,343,378,587,712,428,055,542,081,948,555,108,709,294,455,631,806,516,778,066,465,591,655,510,965,922,151,931,370,799,104 (~1.2676506002282E+112 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 12,676,506,002,282,294,216,560,126,660,273,332,880,703,343,378,587,712,428,055,542,081,948,555,108,709,294,455,631,806,516,778,066,465,591,655,510,965,922,151,931,370,799,104 (~1.2676506002282E+112 million trillion)