Select 20 unique numbers from 1 to 1000000000000000
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 411,031,762,331,138,392,061,231,189,640,739,308,992,623,127,713,969,860,242,967,171,888,939,916,539,295,645,386,113,764,440,586,435,885,268,894,072,992,440,235,396,309,280,606,598,653,726,831,221,986,138,780,734,661,900,237,660,591,819,867,417,820,866,031,131,798,319,912,340,977,609,818,105,990,172,373,554,316,801,452,049,902,468,161,762,295,774,936,378,161,955,675,832,320 (~4.1103176233114E+263 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 999,999,999,999,810,011,743,856,794,528,994,656,317,205,023,816,574,379,862,082,044,899,935,130,345,287,618,570,386,275,401,508,791,533,111,835,051,278,501,900,042,136,573,404,582,479,650,411,545,837,251,314,700,122,314,893,400,740,064,421,048,422,898,214,736,192,129,984,198,783,375,860,134,525,292,705,421,789,913,749,704,876,017,334,682,230,317,047,903,473,638,629,880,137,509,653,880,883,904,512 (~9.9999999999981E+281 million trillion)
If order does not matter (e.g. most lottery numbers): 411,031,762,331,138,392,061,231,189,640,739,308,992,623,127,713,969,860,242,967,171,888,939,916,539,295,645,386,113,764,440,586,435,885,268,894,072,992,440,235,396,309,280,606,598,653,726,831,221,986,138,780,734,661,900,237,660,591,819,867,417,820,866,031,131,798,319,912,340,977,609,818,105,990,172,373,554,316,801,452,049,902,468,161,762,295,774,936,378,161,955,675,832,320 (~4.1103176233114E+263 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 999,999,999,999,810,011,743,856,794,528,994,656,317,205,023,816,574,379,862,082,044,899,935,130,345,287,618,570,386,275,401,508,791,533,111,835,051,278,501,900,042,136,573,404,582,479,650,411,545,837,251,314,700,122,314,893,400,740,064,421,048,422,898,214,736,192,129,984,198,783,375,860,134,525,292,705,421,789,913,749,704,876,017,334,682,230,317,047,903,473,638,629,880,137,509,653,880,883,904,512 (~9.9999999999981E+281 million trillion)
