Select 28 unique numbers from 20 to 40
Total possible combinations (ways)
If order does not matter (e.g. most lottery numbers): 10,523,016,528,610,349,709,044,819,559,012,368,384 (~1.052301652861E+19 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 10,523,016,528,610,349,709,044,819,559,012,368,384 (~1.052301652861E+19 million trillion)
If order does not matter (e.g. most lottery numbers): 10,523,016,528,610,349,709,044,819,559,012,368,384 (~1.052301652861E+19 million trillion)
If order matters (e.g. pick3 numbers, permutations, lock combinations, pin-codes): 10,523,016,528,610,349,709,044,819,559,012,368,384 (~1.052301652861E+19 million trillion)