Select 20 unique numbers from 10 to 1000
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 282,833,963,374,096,527,857,882,422,479,328,913,653,760 (~2.828339633741E+23 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 688,107,317,473,397,656,316,210,794,549,231,571,956,157,856,531,018,204,315,648 (~6.881073174734E+41 million trillion)
If order does not matter (e.g. most lottery numbers): 282,833,963,374,096,527,857,882,422,479,328,913,653,760 (~2.828339633741E+23 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 688,107,317,473,397,656,316,210,794,549,231,571,956,157,856,531,018,204,315,648 (~6.881073174734E+41 million trillion)
