Probability Questions and answers

  1. Aptitude
    1. Compound interest
    2. Boat and Stream
    3. Trains
    4. Percentage
    5. Discount
    6. Mixture and Allegation
    7. Unitary Method
    8. Work and Wages
    9. Pipes and Cisterns
    10. Linear Equations
    11. Approximation
    12. Word problems
    13. Number System
    14. Time and Distance
    15. Average
    16. Ratio and Proportions
    17. Profit and Loss
    18. Partnership
    19. Permutation and combination
    20. Probability
    21. Problem on ages
    22. Time and work
    23. Simple and compound interest
    24. Mensuration
    25. Number series
1). What is the probability that a card drawn at random from a pack of 52 cards either a king or a spade?
A). 17/52
B). 4/13
C). 3/13
D). 13/52
2). A card is drawn from a well-shuffled pack of cards. The probability of getting a queen of club or a king of heart is
A). 1/52
B). 1/26
C). 1/13
D). 1/39
3). One card is drawn at random from a well-shuffled pack of 52 cards. What is the probability that the card is either a red card or a king?
A). 1/3
B). 7/13
C). 10/13
D). None of these
4). A single letter is selected at random from the word "PROBABILITY". The probability that it is a vowel, is
A). 3/11
B). 4/11
C). 2/11
D). 0
5). The probability that a leap year selected at random contains 53 Sundays, is
A). 7/366
B). 26/183
C). 1/7
D). 2/7


6). The probability of drawing a red card from a deck of playing cards is
A). 2/18
B). 1/13
C). 1 /4
D). 1 / 2
7). The probability of getting a composite number when a six-faces unbiased die is tossed, is
A). 1 / 4
B). 1 / 3
C). 1 / 2
D). 1
8). If three unbiased coins are tossed simultaneously, then the probability of exactly two heads, is
A). 1 / 8
B). 2 / 8
C). 3 / 8
D). 4 / 8
9). Let E be the set of all integers with 1 at their unit places. The probability that a number chosen from {2,3,4,......50} is an element of E, is
A). 5 / 49
B). 4 / 49
C). 3 / 49
D). 2 / 49
10). When two dice are rolled, what is the probability that the sum of the numbers appeared on them is 11?
A). 1 / 6
B). 1 / 18
C). 1 / 9
D). 1
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