b) Find the probability that i) none of them will be late. {2 marks} ii) only one of them will be late. {2 marks} iii) at least one of them will be late. {2 marks} iv) atmost one of them will be late. {2 marks} 18(a) The first term of an Arithmetic progression AP with six terms is P and its common difference is C. Another AP with five terms has also its first term as P and a common difference of d. The last terms of the two Arithmetic progressions are equal. i) Express d interms of c. {3 marks}
b) Find the probability that i) none of them will be late. {2 marks} ii) only one of them will be late. {2 marks} iii) at least one of them will be late. {2 marks} iv) atmost one of them will be late. {2 marks} 18(a) The first term of an Arithmetic progression AP with six terms is P and its common difference is C. Another AP with five terms has also its first term as P and a common difference of d. The last terms of the two Arithmetic progressions are equal. i) Express d interms of c. {3 marks}