A student club has 20 members. How many ways can the club choose a President, Secretary, and Treasurer?
Stacey Warren - Expert brainly.com
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P(8, 5) =
so then wouldnt the answer to this one be A?
This is a combination/permutation problem. Since "order" does matter, ie, if Sally, Bob and Mike are the three officers, there can be multiple ways to fill the positions: Sally could be Pres, Bob Sec, and Mike Treas, or Sally could be Sec, Bob Pres, Mike Treas, and so on.
Thus, this is a permutation. If order did not matter, ie, all three held the same title, then it would be a combination.
A permutation can be written as nPr where n=total group, P means permutation, and r=number chosen. Thus, this would be 20P3.
Ohhh >.< so satellite was wrong?
satellite is correct, but I am giving you the long answer. :P
Ahhh yea ok :) So for the second one wouldnt it be A? (:
Permutation is calculated as n!/(n-r)!
For #1, this is 20!/(20-3)! = 20*19*18.
For #2, it is 8!/(8-5)!. This equals 8*7*6*5*4*3*2*1/(3*2*1) which equals 8*7*6*5*4. See why?
So A is not correct...
Do you know what is?
Yes it would be C correct?
Woo!! 100%! :) Thanks r u a teacher? :D
yw. No, not a teacher.
Well you definitely should be one! (: Both of you!
Yea getting ready to take a assessment on my online school so i might be posting a few more questions ^_^
Haha not cheating if ur old computer hard drive crashed and now u cant access ur notes!! >.< and finals are almost here too! im soooo stressed all my notes. just, gon.