Help on these probability Questions??!!?

Suppose that the population proportion of Internet users who say that they use Twitter or another service to post updates about themselves or to see updates about others is 19%. Think about selecting random samples from a population in which 19% are Twitter users.

If you select three people the sample space is {TTT, TTTc, TTcT, TcTT, TTcTc, TcTTc, TcTcT, TcTcTc}.

Let X be a random variable that expresses the number of Twitter users in the sample of size 3. Identify the correct sample space for X.

A. {3, 2, 2, 2, 1, 1, 1, 0}

B. {1, 2, 3}

C. {0, 1, 2, 3}

2. Suppose that the population proportion of Internet users who say that they use Twitter or another service to post updates about themselves or to see updates about others is 19%. Think about selecting random samples from a population in which 19% are Twitter users.

If you select three people the sample space is {TTT, TTTc, TTcT, TcTT, TTcTc, TcTTc, TcTcT, TcTcTc}.

Find the following probabilities:

P(TTT) = _Answer 1_

P(TTTc) = _Answer 2_

P(TTcTc) = _Answer 3_

P(TcTcTc) = _Answer 4_

Give your answers to two decimal places.

Answer 1 :

Answer 2 :

Answer 3 :

Answer 4 :

thanks