Q9 of 14 Page 15

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?

Total number of cards = 52
⇒ Total number of possible outcomes = 52
Number of favourable outcomes of getting a spade or an ace = 13 + 3 = 16
∴ Probability of getting a spade or an ace if a card is drawn at random =
                                                                                                     =

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