# Aptitude:: Probability

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### Exercise

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#### A bag contains 6 black and 8 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?

 A. $\frac{3}{4}$ B. $\frac{4}{7}$ C. $\frac{1}{8}$ D. $\frac{3}{7}$

#### One card is drawn at random from a pack of 52 cards. What is the probability that the card drawn is a face card (Jack, Queen and King only)?

 A. $\frac{1}{13}$ B. $\frac{3}{13}$ C. $\frac{1}{4}$ D. $\frac{9}{52}$

#### Two cards are drawn together from a pack of 52 cards. The probability that one is a spade and one is a heart, is:

 A. $\frac{3}{20}$ B. $\frac{29}{34}$ C. $\frac{47}{100}$ D. $\frac{13}{102}$

#### A bag contains 4 white, 5 red and 6 blue balls. Three balls are drawn at random from the bag. The probability that all of them are red, is:

 A. $\frac{1}{22}$ B. $\frac{3}{22}$ C. $\frac{2}{91}$ D. $\frac{2}{77}$

#### A card is drawn from a pack of 52 cards. The probability of getting a queen of club or a king of heart is:

 A. $\frac{1}{13}$ B. $\frac{2}{13}$ C. $\frac{1}{26}$ D. $\frac{1}{52}$

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