A jackhammer assembly is composed of 3 parts a, b and c. After one day of operation the probability partbreaks downis= 0,1 the probability b to break down isb= 0,2 and part c to break down isc= 0,3 . These events are independent of one another and of the condition of the jackhammer. If a part breaks down it stops working. The jackhammer stops working once part a breaks down or both components b and c break down. 1)What is the probability that after one day of operation none of its parts break down? 2)What is the probability that the jackhammer breaks down on the N=1 day? On N=2 day? On N=3 day? 3)What is the probability that it will take 3 or more days for the jackhammer to break down? 4)What is the expected number of days it will take for the jackhammer to break down