Aptitude  Probability  Practice Q&A

1. A letter is randomly taken from English alphabets. What is the probability that the letter selected is not a vowel?

 5/25 2/25 5/26 21/26

2. The probability A getting a job is 1/5 and that of B is 1/7 . What is the probability that only one of them gets a job?

 11/35 12/35 2/7 1/7

3. In a lottery, there are 10 prizes and 25 blanks. A lottery is drawn at random. What is the probability of getting a prize?

 $\dfrac{1}{10}$ $\dfrac{2}{5}$ $\dfrac{2}{7}$ $\dfrac{5}{7}$

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

 $\dfrac{1}{13}$ $\dfrac{2}{13}$ $\dfrac{1}{26}$ $\dfrac{1}{52}$

5. A letter is chosen at random from the word ASSASSINATION. What is the probability that it is a consonant?

 4/13 8/13 7/13 6/13

6. Two dice are thrown simultaneously. What is the probability of getting two numbers whose product is even?

 $\dfrac{1}{2}$ $\dfrac{3}{4}$ $\dfrac{3}{8}$ $\dfrac{5}{16}$

7. Two dice are tossed. The probability that the total score is a prime number is:

 $\dfrac{1}{6}$ $\dfrac{5}{12}$ $\dfrac{1}{2}$ $\dfrac{7}{9}$

8. From a pack of 52 cards, two cards are drawn together at random. What is the probability of both the cards being kings?

 $\dfrac{1}{15}$ $\dfrac{25}{57}$ $\dfrac{35}{256}$ $\dfrac{1}{221}$

9. A card is randomly drawn from a deck of 52 cards. What is the probability getting a five of Spade or Club?

 1/52 1/13 1/26 1/12

10. 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?

 $\dfrac{3}{4}$ $\dfrac{4}{7}$ $\dfrac{1}{8}$ $\dfrac{3}{7}$

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