a）Ahmad has 30 hens. The probability that any hen lays an egg is 0.7. Hens do not lay more than one eggs per day and the

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a）Ahmad has 30 hens. The probability that any hen lays an egg is0.7. Hens do not lay more than one eggs per day and the days onwhich a hen lays an egg are independent.
a. Calculate the probability that Ahmad's hens lay exactlyTWENTY FOUR (24) eggs.
b. It is possible for Ahmad's hens to lay less than TWO (2)eggs? Justify your answer
b) A plane lands at a constant average rate of one every tenminutes. Find the probability that
c)The time taken by a postman to reach Taman Zamrud from thepost office is normally distributed with mean 12 minutes andstandard deviation 2 minutes. He goes to Taman Zamrud every day.Find the probabilities that the postman takes