What have you learned about probability so far? Have you learned about binomial distribution?
Here's my homework question:
A woman flips a coin exactly 6 times in a row. What is the probability that the coin turned heads up exactly 3 times.
Can you show me as much work as you can and explain the steps to me?
Then you would know that:
The number of the particular outcome (3 heads) is
p is the probability of getting heads on 1 flip, so it's 0.5
k is the number of times p will occur, so it's 3
n is the number of times you repeat the process, so it's 6.
This gives you the number of ways 3 heads can be obtained from 6 coin flips.
Now you will need to divide this number by the number of total different outcomes to find the probability.