> Tossing four fair coins and probability?

Tossing four fair coins and probability?

Posted at: 2014-06-09 
1. Toss 4 fair cons and find the probability of exactly 2 heads. I got 3/8 after writing out the combinations. 2. Toss 4 fair coins and find the probability of 3 or more heads. I did the same thing by writing out the possibilities (sample space) and then choosing out of that. I got 5/16. I'm not sure if I'm doing it correctly or if my answers are right..
1. Toss 4 fair cons and find the probability of exactly 2 heads. I got 3/8 after writing out the combinations. .... Correct 2. Toss 4 fair coins and find the probability of 3 or more heads. I did the same thing by writing out the possibilities (sample space) and then choosing out of that. I got 5/16. .... Correct
You are correct.