Answer:480 ways
Explanation:
Given
There are 3-Volume series i.e.

No of ways in which they can be arranged in order is 2 i.e.
or 
For 2 volume series
There are two ways in which 2 volume series is arranged

Considering 3 volume books to be a single book denoted by a
and 2 volume books to be a single denoted by b
Thus we have to arrange a,b and 3 others books
No of ways in which 5 books can be arranged is 5!
also a and b can be arranged in two ways internally so
there are total of =
=480 ways
In recent years, people especially children have to deal with many dangerous health problem, such as overweight, poor resistance,… Although there are some people believe that the government should take full responsibility for this problem, I think that parents and school also play very vital role in creating the issue.
<h3>What is
overweight?</h3>
More body fat than is ideal for health is what is meant by being overweight or fat. In areas with ample food options and inactive lifestyles, being overweight is extremely prevalent.
With more than 1 billion adults in the world being either overweight or obese as of 2003, excess weight had reached epidemic levels. Over 2 billion people were affected in 2013. For all age categories, there have been increases.
A healthy body needs a minimum amount of fat for the proper operation of the hormonal, reproductive, and immune systems, as thermal insulation, as shock absorption for sensitive areas, and as energy for future use. However, the buildup of excessive storage fat can limit movement and flexibility and change the way the body looks.
To learn more about overweight from the given link:
brainly.com/question/1646944
#SPJ4
Answer:
Vote centers
Explanation:
In 2005, the Texas legislature approved county-level decisions to move from traditional, neighborhood precinct polls to vote centers. All voters in counties that allow it can vote in these centers in the general election, regardless of their address, so they can choose the most convenient location.
Vote centers are created to improve the voter experience and are an alternative to traditional,neighborhood based precincts centers. This centers combines multiple precincts which allows voters to choose at which location they wish to vote at.
Answer:
A=1 , D=2,C=3,B=4 ok this is it
Answer:
D. All of the above.
Explanation:
Their are many reasons why economists study the perfect competition model but we will focus on the options given and it is certified that all of them are the reason for this. Because it is used as a benchmark to compare with other market structures etc.
Firms can enter and leave the market without any restrictions , therefore, there is free entry and exit into and out of the market.
A perfectly competitive firm is known to be a price taker because the pressure of competing firms forces them to accept the prevailing equilibrium price in the market. If a firm in a perfectly competitive market raises the price of its product by so much as a penny, it will lose all of its sales to competitors.