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ICSE-VIII-Mathematics

23: Probability Class 8 Maths

with Solutions - page 2
Qstn# 11 Prvs-QstnNext-Qstn
  • #11
    A bag contains six identical black balls. A child withdraws one ball from the bag without looking into it. What is the probability that he takes out: (i) (a) white ball, (ii) black ball
    Ans : ∵ There are 6 black balls in a bag
    ∴ number of possible outcome = 6 (i) A white ball
    As there is no white ball in the bag
    ∴ Its probability is zero (0) = or P(E) = 0 (ii) black ball
    ∴ Number of favourable outcome = 1
    ∴ P(E) = (Number of favourable outcome)/(Number of all possible outcome)
    = 1/6
  • #11-i
    (a) white ball,
    Ans : A white ball
    As there is no white ball in the bag
    ∴ Its probability is zero (0) = or P(E) = 0
  • #11-ii-a
    black ball
    Ans : black ball
    ∴ Number of favourable outcome = 1
    ∴ P(E) = (Number of favourable outcome)/(Number of all possible outcome)
    = 1/6