1) If P(event E) =0.47 then find P(not E) is? a) 0.53 b) 0.47 c) 1.5 d) 0.5 2) In a throw of a die what is the probability of not getting 4 or 5. a) 1/3 b) 2/3 c) 4/5 d) None of these 3) In a class there are X girls and Y boys , a student is selected random, then probability of selecting a boy is ? a) Y b) X c) Y/X+Y d) 0 4) The probability of guessing the correct answer to a certain question is X/2. If probability of not guessing the correct answer is 2/3 then value of x is ? a) 2/3 b) 1/3 c) 3/5 d) 4/7 5) In a survey of 364 children aged 19-36 months was found that 91 liked to eat potato chips.if a child is selected at random, compute the probability that he/she does not like to eat potato chips. a) 0.5 b) 0.60 c) 0.57 d) 0.75

probability (9th)

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