a plastic box 1.5m long, 1.25m wide and 65cm deep is to be made. it is to be open at the top. ignoring the thickness of the plastic sheet, determine i)the area of the sheet required for making the box. ii)the cost of sheet for it, if a sheet measuring 1ms²quare costs Rs.20

Suppose you just purchased a digital music player and have put 8 tracks on it. after listening to them you decide that you like 4 of the songs. with the random feature on your player, each of the 8 songs is played once in random order. find the probability that among the first two songs played (a) you like both of them. would this be unusual? (b) you like neither of them. (c) you like exactly one of them. (d) redo () if a song can be replayed before all 8 songs are played.