probability

Probability

Probability: Probability Formulas, Probability Meaning, Conditional Probability Definition, Probability Problems, Probability Questions with Solved Exercises

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Online Aptitude Questions with Answers on Probability

Q36. **A box contains 3 blue marbles, 4 red, 6 green marbles and 2 yellow marbles. If three marbles are drawn what is the probability that one is yellow and two are red?**

  1.  24/455
  2.  3/91
  3.  12/455
  4.  15/91
  5.  None of these

Solution : 12/455
Q37. **A bag contains five white and four red balls. Two balls are picked at random from the bag. What is the probability that they both are different color?**

  1.  4/9
  2.  5/9
  3.  7/9
  4.  8/9
  5.  1/3

Solution : 5/9

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Q38. **Out of 15 consecutive numbers, 2 are chosen at random. The probability that they are both odds or both primes is -.**

  1.  10/17
  2.  10/19
  3.  46/105
  4.  11/15
  5.  cannot be determined

Solution : cannot be determined
Q39. **What is the probability that a leap year has 53 Sundays and 52 Mondays?**

  1.  0
  2.  1/7
  3.  2/7
  4.  5/7
  5.  6/7

Solution : 1/7

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Q40. **10 books are placed at random in a shelf. The probability that a pair of books will always be together is -.**

  1.  1/10
  2.  9/10
  3.  1/5
  4.  3/10
  5.  1/2

Solution : 1/5
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Solution :

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