07-11-2021, 05:29 AM
HP 10BII+ got this functions but not for the HP 10BII
HP 10BII User Manual doesn't provide the way to calculate this and
here is my attempt.
Formulas:
Permutation: nPr = n! ÷ [ (n - r)! ]
Combination: nCr = n! ÷ [ r! x (n - r)! ]
Example:
6P3
6 [-] 3 [=] [n!] [÷] 6 [n!] [SWAP] [=] display answer 120
6C3
6 [-] 3 [=] [n!] [x] 3 [n!] [=] [÷] 6 [n!] [SWAP] [=] display answer 20
Remark:
The Factorial Function limit is up to 253! = 5.17 E499
Gamo 7/2021
HP 10BII User Manual doesn't provide the way to calculate this and
here is my attempt.
Formulas:
Permutation: nPr = n! ÷ [ (n - r)! ]
Combination: nCr = n! ÷ [ r! x (n - r)! ]
Example:
6P3
6 [-] 3 [=] [n!] [÷] 6 [n!] [SWAP] [=] display answer 120
6C3
6 [-] 3 [=] [n!] [x] 3 [n!] [=] [÷] 6 [n!] [SWAP] [=] display answer 20
Remark:
The Factorial Function limit is up to 253! = 5.17 E499
Gamo 7/2021