Company: ZS Associates.
Difficulty: medium
A cupboard has three drawers: one drawer has 5 red and 4 green balls, the other has 5 green balls and the third one has 4 red balls. One ball is randomly drawn from any one drawer, also chosen randomly. What is the probability that the chosen ball is red? 1/10 10/19 8/15 2/3 The average age of Macbeth and his two children is 17 years and the average age of Macbeth's wife and the two same children is 16 years. If the age of Macbeth is 33 years, then what is the age of his wife? 33 years 25 years 30 years 29 years Using digits 2, 3, 4, 5, 6 how many four digit numbers can be formed such that they are divisible by 3? (repetition is not allowed) 41 43 46 48 Four dice are rolled simultaneously. What is the number of possible outcomes in which at least one of the dice shows 6? 61 / 4 625 671 1296 In a school, four boys - Ron, Sam, Mark and Roy are made to stand in a row with each of them facing east. Each boy is of a distinct age. Ron who is the oldest, is standing to the immediate right of