Select 2 unique numbers from 1 to 20000
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 199,990,000 (~200 million)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 399,980,000 (~400 million)
If order does not matter (e.g. most lottery numbers): 199,990,000 (~200 million)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 399,980,000 (~400 million)