Select 20 unique numbers from 1000 to 9999
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 4,892,721,591,871,638,919,946,012,837,927,443,433,925,645,030,330,454,794,829,824 (~)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 11,903,512,186,313,715,262,773,512,387,975,743,134,735,198,668,287,795,566,198,263,616,206,210,722,693,120 (~)
If order does not matter (e.g. most lottery numbers): 4,892,721,591,871,638,919,946,012,837,927,443,433,925,645,030,330,454,794,829,824 (~)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 11,903,512,186,313,715,262,773,512,387,975,743,134,735,198,668,287,795,566,198,263,616,206,210,722,693,120 (~)