Given:
62% of the residents visit Comet Mall.
73% of the residents visit Star Mall.
48% of the residents visit both malls.
To find:
The probability that a resident chosen at random shops at either Comet Mall or at Star Mall.
Solution:
Let A be the event that the residents visit Comet Mall and B be the event that residents visit Star Mall. Then, we have



We need to find the probability that a resident chosen at random shops at either Comet Mall or at Star Mall. It means, we have to find the value of
.
We know that,

On substituting the given values, we get


Therefore, the probability that a resident chosen at random shops at either Comet Mall or at Star Mall is 87%.
Answer:
population pyramids
Explanation:
Population pyramids show the structure of a population by comparing relative numbers of people in different age groups.
Population structures differ markedly between Less Economically Developed Countries LEDCs and More Economically Developed Countries MEDCs.
The shape of a population pyramid can tell us a lot about an area's population.
Usually pyramids are drawn with the percentage of male population on the left and percentage of female population on the right.
It gives us information about birth and death rates as well as life expectancy.
Whoch birds are migrating is my answer because, for a the birds are migrating because its winter for c birds are already going since one of the questions are where the birds are going, and d is that they are going there to not freeze, the only logical choice FOR ME is B