Select 20 unique numbers from 0000001 to 9999999
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 41,102,313,074,894,130,370,889,359,827,412,031,131,443,798,356,811,258,523,656,215,782,310,258,987,132,688,872,362,904,285,040,655,771,390,658,308,557,103,955,968 (~4.1102313074894E+103 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 99,997,900,020,614,892,093,445,932,343,223,691,801,663,700,370,096,170,915,223,533,155,409,017,637,491,145,972,737,158,085,621,980,206,355,419,284,281,345,546,411,994,749,093,927,714,816 (~9.9997900020615E+121 million trillion)
If order does not matter (e.g. most lottery numbers): 41,102,313,074,894,130,370,889,359,827,412,031,131,443,798,356,811,258,523,656,215,782,310,258,987,132,688,872,362,904,285,040,655,771,390,658,308,557,103,955,968 (~4.1102313074894E+103 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 99,997,900,020,614,892,093,445,932,343,223,691,801,663,700,370,096,170,915,223,533,155,409,017,637,491,145,972,737,158,085,621,980,206,355,419,284,281,345,546,411,994,749,093,927,714,816 (~9.9997900020615E+121 million trillion)
