(Solution Download) If the probability of success for each trial is 25

If the probability of success for each trial is .25 and all trials are independent, then
a. What is the probability of failure for a single trial?
b. What is the probability of two successes in two trials?
c. What is the probability of n successes in n trials?
d. What is the probability that there will be some combination of two successes and three failures in five trials?