Answer:
720
Step-by-step explanation:
I will use the following counting principle:
Product rule: if there are n ways of doing something, and m ways of doing another thing, there are n×m ways of doing both things.
First, we have to choose the 3 people that will be in the first row. This is a 3-element subset of the set of six people, therefore there are
ways of doing this.
Now, we have to arrange the order of the 2 lrows. Each one has 3 people, so there are 3!=6 ways to form one rows. Hence, there are 3!²=36 ways of arranging the two rows.
By the product rule, there are 20×36=720 ways of arrange the officers.
Answer:
$85.00
Step-by-step explanation:
7.80 x 7 = 54.6
7.60 x 4 = 30.4
54.6 + 30.4 = 85
Answer:
The answer is ± 5<em>i</em>
Hello,
Please, see the attached file.
Thanks.