A few days ago
How many way can we select a offices from President, VP, Secretary and Treasure from a class of 7 if they are?
not allowed to serve in more than one office and each office is filled by only one person?
Please explain how you came out with the answer and I will pick you as the best answer
Top 3 Answers
A few days ago
Favorite Answer
It can be be calculated through circular permutation, the formula of which basically limits only one person on one position at any given combination.
nCr = n(n-1)….(n-r+1)/r!, where n = total number in the set of objects, and r = number of objects for combination.
7C4 = (7)(7-1)…(7-4+1)/(4)(3)(2)(1) = 7(6)(5)(4)/ 24 = 840 / 24 = 35
Therefore, there are 35 ways to select offices from President, VP, Secretary and Treasure from a class of 7 if they are not allowed to serve in more than one office and each office is filled by only one person.
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A few days ago
put 4 over 7 then multiply it by 4/6 and so on down to one, then you have your answer. 3.25 different outcomes
0
A few days ago
You should be secretary, to the president, because of your spelling magic!.
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