Here is an example of permutations..
1. Compute: 5 P 5 5 · 4 · 3 · 2 · 1 = 120
2. Compute: 6 P 2 6 · 5 = 30 or multiply by two factors
of the factorial, starting with 6
3. Find the number of ways to arrange 5 objects that are chosen from a set of 7 different objects.
7 P 5 = 7·6·5·4·3 = 2520 or
4. What is the total number of possible 5-letter arrangements of the letters w, h, i, t, e, if each letter is used only once in each arrangement?
5 P5 = 5·4·3·2·1 = 120 or or simply 5!
5. How many different 3-digit numerals can be made from the digits 4, 5, 6, 7, 8 if a digit can appear just once in a numeral?
5 P3 = 5·4·3 = 60 or
If you want to learn more, about Permutations. Just click the link down here.. If you can't click this link, just copy & paste it.
http://www.youtube.com/watch?v=IGNO5ucy6eY
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If you want to learn more, about Permutations. Just click the link down here.. If you can't click this link, just copy & paste it.
http://www.youtube.com/watch?v=IGNO5ucy6eY
|
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