There are 20 students in the cs major and 15 students in the math major. a. if no student is in both majors, how many ways are there to pick two students so that one is in the cs major and the other is in the math major? b) in how many ways can one representative be picked who is either a cs major or a math major?

a) There are 300 ways to pick two students so that one is in the CS major and the other is in the Math major.

b) 35 ways that one representative can be picked who is either a CS major or a Math major.

Step-by-step explanation:

a. If no student is in both majors, how many ways are there to pick two students so that one is in the CS major and the other is in the Math major?

The ordering is not important, so there are 20*15 = 300 ways to pick two students so that one is in the CS major and the other is in the Math major.

b) In how many ways can one representative be picked who is either a CS major or a Math major?

Since no student is in both majors, there are 20+15 = 35 ways that one representative can be picked who is either a CS major or a Math major.

41*67/2=1373.5

step-by-step explanation:

i just used a calculator

the population of other specie of birds will decline or other specie of birds will find some alternate source of food to survive.

explanation:

according to the competitive exclusion principle, which is also known as gause's law, two specie living in the same niche and feeding on the same resource cannot co-exist stably.

as we have well studied the theory of natural selection which states that only those organisms survive which have better tendency to compete for food and adapt to the environmental conditions.

coming towards the question, what wi ll happen when one species outcompetes the other for the small fish , the other specie will not get enough food and will start to die or decline in population. eventually either other specie needs to find another alternative food source for itself or migrate at some other location where there is less competition otherwise it will just not exist anymore at that niche.

hope it !