Select 20 unique numbers from 100 to 1000
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 41,316,225,166,759,672,628,259,471,820,838,649,462,784 (~4.131622516676E+22 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 100,518,327,178,487,839,005,959,590,223,220,619,138,133,761,239,774,228,643,840 (~1.0051832717849E+41 million trillion)
If order does not matter (e.g. most lottery numbers): 41,316,225,166,759,672,628,259,471,820,838,649,462,784 (~4.131622516676E+22 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 100,518,327,178,487,839,005,959,590,223,220,619,138,133,761,239,774,228,643,840 (~1.0051832717849E+41 million trillion)