Select 2 unique numbers from 1 to 99999999999999999999999999999999999999999999999999999999999999999999999999999999
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 5,000,000,000,000,000,032,642,038,725,341,132,784,228,321,074,443,133,559,224,422,272,760,255,888,919,090,571,255,168,754,994,433,517,908,171,235,093,587,892,596,875,058,824,271,765,178,092,274,325,219,140,698,112 (~5.0E+141 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 10,000,000,000,000,000,065,284,077,450,682,265,568,456,642,148,886,267,118,448,844,545,520,511,777,838,181,142,510,337,509,988,867,035,816,342,470,187,175,785,193,750,117,648,543,530,356,184,548,650,438,281,396,224 (~1.0E+142 million trillion)
If order does not matter (e.g. most lottery numbers): 5,000,000,000,000,000,032,642,038,725,341,132,784,228,321,074,443,133,559,224,422,272,760,255,888,919,090,571,255,168,754,994,433,517,908,171,235,093,587,892,596,875,058,824,271,765,178,092,274,325,219,140,698,112 (~5.0E+141 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 10,000,000,000,000,000,065,284,077,450,682,265,568,456,642,148,886,267,118,448,844,545,520,511,777,838,181,142,510,337,509,988,867,035,816,342,470,187,175,785,193,750,117,648,543,530,356,184,548,650,438,281,396,224 (~1.0E+142 million trillion)
