Select 2 unique numbers from 1 to 10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 49,999,999,999,999,998,486,656,110,625,518,082,973,725,163,772,751,181,324,120,875,475,173,424,217,777,037,767,098,169,202,353,125,934,013,756,207,986,941,204,091,067,867,184,139,242,319,692,520,523,619,938,935,511,795,533,394,990,905,590,906,653,083,564,427,444,224 (~5.0E+181 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 99,999,999,999,999,996,973,312,221,251,036,165,947,450,327,545,502,362,648,241,750,950,346,848,435,554,075,534,196,338,404,706,251,868,027,512,415,973,882,408,182,135,734,368,278,484,639,385,041,047,239,877,871,023,591,066,789,981,811,181,813,306,167,128,854,888,448 (~1.0E+182 million trillion)
If order does not matter (e.g. most lottery numbers): 49,999,999,999,999,998,486,656,110,625,518,082,973,725,163,772,751,181,324,120,875,475,173,424,217,777,037,767,098,169,202,353,125,934,013,756,207,986,941,204,091,067,867,184,139,242,319,692,520,523,619,938,935,511,795,533,394,990,905,590,906,653,083,564,427,444,224 (~5.0E+181 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 99,999,999,999,999,996,973,312,221,251,036,165,947,450,327,545,502,362,648,241,750,950,346,848,435,554,075,534,196,338,404,706,251,868,027,512,415,973,882,408,182,135,734,368,278,484,639,385,041,047,239,877,871,023,591,066,789,981,811,181,813,306,167,128,854,888,448 (~1.0E+182 million trillion)