Select 20 unique numbers from 1 to 550
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 1,859,066,843,640,242,628,379,850,034,183,667,712 (~1.8590668436402E+18 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 4,522,927,457,226,953,793,928,038,827,719,814,472,192,191,726,316,683,264 (~4.522927457227E+36 million trillion)
If order does not matter (e.g. most lottery numbers): 1,859,066,843,640,242,628,379,850,034,183,667,712 (~1.8590668436402E+18 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 4,522,927,457,226,953,793,928,038,827,719,814,472,192,191,726,316,683,264 (~4.522927457227E+36 million trillion)