Q7 of 14 Page 15

Five male and three female candidates are available for selection as on manager in a company. Find the probability that male is selected.

Number of male candidates available = 5
Number of female candidates available = 3∴ Total number of candidates available = 8∴ Total outcomes = 8
Number of outcomes for a male getting selected = 5∴ Probability of a male getting selected =

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5 A bag contains 5 red balls and some blue balls. If the probability of drawing a blue ball is double that of a red ball, find the number of blue balls in the bag. 6 A bag contains 12 balls out of which x are white.
(i) If one ball is drawn at random, what is the probability that it will be a white ball?
(ii) If 6 more white balls are put in the bag, the probability of drawing a white ball will be double than that in (I case). Find x. 8 Cards marked with the numbers 2 to 101 are placed in a box and mixed thoroughly. One card is drawn from this box. Find the probability of a number which is a perfect cube. 9 A card is drawn from an ordinary pack and a gambler bets that it is a spade or an ace. What are the odds against his winning this bet?