Select 2 unique numbers from 1 to 100000000000000000000000000000
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 4,999,999,999,999,999,022,161,457,533,124,842,234,907,381,193,995,301,421,056 (~5.0E+39 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 9,999,999,999,999,998,044,322,915,066,249,684,469,814,762,387,990,602,842,112 (~1.0E+40 million trillion)
If order does not matter (e.g. most lottery numbers): 4,999,999,999,999,999,022,161,457,533,124,842,234,907,381,193,995,301,421,056 (~5.0E+39 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 9,999,999,999,999,998,044,322,915,066,249,684,469,814,762,387,990,602,842,112 (~1.0E+40 million trillion)