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    Probability
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    Which of the following arguments are correct and which are not correct ? Give reasons for your answer.

    If a die is thrown once, the possible outcomes are
    S = {1, 2, 3, 4,5, 6} i.e.    n(S) = 6
    Let A be the favourable outcomes of getting add number. Then
    A = {1,3,5} i.e.    n(S) = 3

    Therefore, P(A) = fraction numerator straight n left parenthesis straight A right parenthesis over denominator straight n left parenthesis straight S right parenthesis end fraction equals 3 over 6 equals 1 half

    Thus, the given statement is correct.

    Answer
    The probability of an event that is certain to happen is ________ Such an event is called _________.

    1

    , sureor certain event 
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    The sum of the probabilities of all the elemen-tary events of an experiment is ______.

    1

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    Probability of an event E + Probability of the event ‘not E’_______.

    1

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    The probability of an event that cannot happen is ________ Such an event is called __________.

    0

    , impossible event
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