A component in a music system has a life expectancy of 2,400 hours with a standard deviation of 300 hours. If an average person listens to
music for 1,000 hours in a year, the probability that the component lasts for more than 3 years is %.

What is the probability of throwing several dice with sum equal to 6 (six)? show the ways of possibilities for sum 6 (as the numerator) and the ways of throwing n dices for n = 1, 2, 3, 4 or 5 as denominator for all the questions to earn full credits. (a)throw one die, (b) throw two dice, (c) throw three dice (d) throw 4 dice, (e) throw 5 dice