One engineering firm enjoys 30% success rate in getting state government construction contracts The bids for different projects are assessed independently of each other. 

 This month, they have submitted bids on eight construction projects to be funded by the state government. Find the probability that the firm will get at least five out of eight contracts? 

 b) Find the probability that the firm has to submit 10 bids to win 3 contracts. c) 

Find the probability that the firm has to submit 10 bids before winning the first contract.