Fundamental principle of counting
Permutations and combinations · Mathematics
Study notes
Q: (a) 3 shirts, 4 pants: how many outfits? (b) A 3-digit PIN using digits 0-9, repetition allowed? (a) 3 x 4 = 12 outfits. (b) 10 x 10 x 10 = 1000 PINs.
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Permutations and combinations · Mathematics
Q: (a) 3 shirts, 4 pants: how many outfits? (b) A 3-digit PIN using digits 0-9, repetition allowed? (a) 3 x 4 = 12 outfits. (b) 10 x 10 x 10 = 1000 PINs.