Answer:
c. 3/8
Step-by-step explanation:
For each toss, there is a 50/50 probability that it lands on heads or tails. Let T be a tails and H be a heads, the sample space of this experiment is:
S={HHH, HHT ,HTT ,HTH, TTT, TTH, THH, THT}
The experiment has 8 possible outcomes. Only three of those outcomes have exaclty two heads (HHT, HTH, THH). Therefore, the probability of getting exactly two heads is 3/8.