please help with binomial distribution

Question 4 4.1 It has been found that one out of eight voters vote at a different polling station to the one they registered at and that seven out of eight would vote at the station at which they registered. a. What is the likelihood that ve or six voters would vote at a different polling station to the one they registered at when 12 voters are randomly selected? (3 Marks} Calculate the probability of no more than three voters voting at a different polling station to the one they registered at when 10 voters are randome selected. (5 Marks} What is the mean number of voters who would vote at the polling station at which they registered when 1 000 voters are randomly selected from a voters' roll? (2 Marks)