Four fair coins are tossed at once. what is the probability of obtaining 3 heads and one tail? 2

There are 16 possible outcomes, all equally likely. There’s only one way to get four heads and only one way to get no heads. That leaves 14 ways to get two or three heads.

There’s four ways to get three heads. The first coin can be the tail, the second can be the tail, the third can be the tail, or the fourth can be the tail.

There’s also four ways to get one head. The first coin can be the head, the second can be the head, the third can be the head, or the fourth can be the head.

That leaves six ways left to get exactly two heads. So 6/16 or 3/8.

Step-by-step explanation:

the central idea is that:

individuals should refuse to cooperate with institutions they believe unjust.

thoreau felt  that governments were more often agents of corruption than justice, even democracies, and that just because the majority feels a certain way does not make it just or correct in absolute terms. he uses the fact that slavery exists in our democracy to support this idea.

he goes on to say that, as a result, people should live true to their own internal laws regarding right and wrong, as a product of reflection and a moral life, rather than following every law that society imposes. 

step-by-step explanation: