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An urn contains 5 red and 5 black balls....

An urn contains 5 red and 5 black balls. A ball is draw at random, its colour is noted and is returned to the urn. Moreover, 2 additional balls of the colour drawn are put in the urn and then a ball is drawn at random. What is the probability that the second ball is red?

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The correct Answer is:
`(1)/(2)`
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An urn contains 5 red and 5 black balls. A ball is drawn at random, its colour is noted and is returned to the urn. Moreover, 2 additional balls of the colour drawn are put in the urn and then a ball is drawn at random. The probability that the second ball drawn is red will be

An urn contains 5 red and 5 black balls. A balls is drawn at random , its colour is noted and is returned to the urn. Moreover , 2 additional balls of the colour drawn are put in the urn and then a ball is drawn at random . Then probability that the second ball drawn is red will be .......

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  • An urn contains 5 red and 5 black balls. A ball is drawn at random, its colour is noted and is returned to the urn. Moreover, 2 additional balls of the colour drawn are put in the urn and then a ball is drawn at random. The probability that the second ball drawn is red will be:

    A
    `(5)/(12)`
    B
    `(1)/(2)`
    C
    `(7)/(12)`
    D
    `(1)/(4)`

  • An urn contains 5 red and 5 black balls. A ball is drawn at random, its colour is noted and is returned to the urn. Moreover, 2 additional balls of the colour drawn are put in the urn and then a ball is drawn at random. The probability that the second ball drawn is red will be

    A
    `(5)/(12)`
    B
    `(1)/(2)`
    C
    `(7)/(12)`
    D
    `(1)/(4)`

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