...a fair die? Options: (a) 1/6 (b) 1/3 (c) ½ (d) 2/3 Answer: A Use the following information for question 2 and 3 The surname of 40 children in a class were arranged in alphabetical order,16 of the surnames begin with O and 9 of the surnames begins with A. 14 letters of the alphabet do not appear as the first letter of a surname. Qtn 2: What is the probability that the surname of a child picked at random from the class begins with either O and A? Options: (a) 5/8 (b)7/8 (c)9/16 (d)14/25 Answer: A Qtn 3: If more than one surname begins with a letter besides A and O, how many surnames begin with the letter? Options: (a) 2 (b) 3 (c) 4 (d) 6 Answer: B The table gives the score of a group of students in an English language test. Scores | 2 | 3 | 4 | 5 | 6 | 7 | No. of Students | 2 | 4 | 7 | 2 | 3 | 2 | Qtn 4: If a student is chosen at random from the group, what is the probability that he scored at least 6 marks? Options: (a) 3/20 (b) 1/5 (c) ¼ (d) 3/10 Answer: C Qtn 5: What is the probability that three customers waiting in a bank will be served in the Sequence of their arrival at the bank? Options: (a) 1/6 (b) 1/3 (c) ½ (d) 2/3 Answer: C Qtn 6: The probability that Kodjo and Adoga pass an examination are ¾ and 3/5 respectively. Find the probability of both boys failing the examination. Options: (a) 1/10 (b) 3/10 (c) ½ (d) 2/3 Answer: A Qtn 7: The mean of 20 observations in...
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