probability questions Practice Question and Answer

Q:

Five dice are tossed together. What is the probability of getting different faces in all of the dice?

478 0

  • 1

    6!/6

    Correct
    Wrong
  • 2

     6!/65

    Correct
    Wrong
  • 3

    5!/65

    Correct
    Wrong
  • 4

    5!/66

    Correct
    Wrong
  • 5

    6!/5

    Correct
    Wrong
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Answer : 2. "

 6!/65

"

Q:

A glass jar contains 6 white, 8 black, 4 red and 3 blue marbles. If a single marble is chosen at random from the jar, what is the probability that it is black or blue?

752 0

  • 1
    $${8\over 21}$$
    Correct
    Wrong
  • 2
    $${11\over 21}$$
    Correct
    Wrong
  • 3
    $${5\over 21}$$
    Correct
    Wrong
  • 4
    $${1\over 7}$$
    Correct
    Wrong
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Answer : 2. "$${11\over 21}$$"

Q:

In a lottery, there are 7 prizes and 21 blanks. If a lottery is drawn at random, then what is the probability of getting a prize?

604 0

  • 1
    $${2\over5}$$
    Correct
    Wrong
  • 2
    $${3\over5}$$
    Correct
    Wrong
  • 3
    $${1\over4}$$
    Correct
    Wrong
  • 4
    $${1\over10}$$
    Correct
    Wrong
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Answer : 3. "$${1\over4}$$"

Q:

A bag contains 30 balls, numbered 1 to 30. Two balls are drawn at random. What is the probability that the balls drawn contain a number which is multiple of 4 or 6 but not a multiple of both?

1195 0

  • 1
    $$ {1\over6}$$
    Correct
    Wrong
  • 2
    $$ {1\over5}$$
    Correct
    Wrong
  • 3
    $$ {1\over4}$$
    Correct
    Wrong
  • 4
    $$ {1\over3}$$
    Correct
    Wrong
  • 5
    None of these
    Correct
    Wrong
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Answer : 5. "None of these"

Q:

9 persons are seated around a round table. What is the probability that two particular persons sit together?

850 0

  • 1
    $$ {1\over 4}$$
    Correct
    Wrong
  • 2
    $$ {2\over 5}$$
    Correct
    Wrong
  • 3
    $$ {1\over 3}$$
    Correct
    Wrong
  • 4
    $$ {3\over 4}$$
    Correct
    Wrong
  • 5
    $$ {2\over 3}$$
    Correct
    Wrong
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Answer : 1. "$$ {1\over 4}$$"

Q:

There are 3 green, 4 orange and 5 white color bulbs in a bag. If a bulb is picked at random, what is the probability of having either a green or a white bulb?

3218 0

  • 1
    3/4
    Correct
    Wrong
  • 2
    2/3
    Correct
    Wrong
  • 3
    4/3
    Correct
    Wrong
  • 4
    2/5
    Correct
    Wrong
  • 5
    None of these
    Correct
    Wrong
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Answer : 2. "2/3"

Q:

What is the probability of forming word from the letters of word “IMPEACH” such that all vowels come together?

927 0

  • 1
    $$ {8\over 35}$$
    Correct
    Wrong
  • 2
    $$ {1\over 7}$$
    Correct
    Wrong
  • 3
    $$ {3\over 35}$$
    Correct
    Wrong
  • 4
    $$ {17\over 35}$$
    Correct
    Wrong
  • 5
    $$ {2\over 7}$$
    Correct
    Wrong
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Answer : 2. "$$ {1\over 7}$$"

Q:

Ten different letters of alphabet are given, words with 5 letters are formed from these given letters. Then, how many such words can be formed which have at least one letter repeated ? 

960 0

  • 1
    69760
    Correct
    Wrong
  • 2
    69970
    Correct
    Wrong
  • 3
    67960
    Correct
    Wrong
  • 4
    65760
    Correct
    Wrong
  • 5
    69790
    Correct
    Wrong
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Answer : 1. "69760 "

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