i) Find the probability of getting three heads in five tosses of unfair
coin in which the probability of getting a head is (3 marks)

ii) Find the mean and standard deviation of the numbers 2, 3, 4, 5, 6 and 7(3 marks)

g) How many arrangements can be made of the letters in the word
TROTTING? In how many of these are N and G next to each other? (3 marks)

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