Answer:
Step-by-step explanation:
A combination rule is used to determined the correct number of permutations while a permutation rule is an ordered combination.
A combination is a selection of all or part of a set of objects, without regard to the order in which they were selected. While permutation state that anything permute itself is equivalent to itself. Example (3)3=3!
Answer:
18
Step-by-step explanation:
4(3)=12
12+6=18
Answer:
The other one.
Step-by-step explanation:
The other person that answered your question is correct, just confirming it for youuu! :)
Answer:
90
Step-by-step explanation:
A group of 10 people is choose a chairperson and vice-chairperson. They put all 10 peoples names into a bar. The first name drawn becomes chair. The second name drawn becomes vice-chair. How many possible combinations of chair and Vice-chair are there ?
This is calculated using the Permutation formula
nPr = n!/(n - r)!
Where:
n = 10 people
r = 2 = 2 positions to be filled , Chairman and Vice chairman
Hence:
10P2 = 10!/(10 - 2)!
= 90 ways
