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Bag-I contains 3 black and 2 white balls...

Bag-I contains 3 black and 2 white balls, Bag-II contains 2 black and 4 white balls. A bag and a ball is selected at random. Determine the probability of selecting a black ball.

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The correct Answer is:
`(7)/(15)`
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KUMAR PRAKASHAN-PROBABILITY-Solutions of NCERT Exemplar Problems (Short Answer Type Questions)
  1. Suppose 10,000 tickets are sold in a lottery each for ₹ 1. First prize...

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  2. A bag contains 4 white and 5 black balls. Another bag contains 9 white...

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  3. Bag-I contains 3 black and 2 white balls, Bag-II contains 2 black and ...

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  4. A box has 5 blue and 4 red balls. One ball is drawn at random and not ...

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  5. Four cards are successively drawn without replacement from a deck of 5...

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  6. If a die is thrown 5 times. Then find the probability that an odd numb...

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  7. Ten coins are tossed. Then what is the probability of getting atleast ...

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  8. The probability of a man hitting a target is 0.25. He shoots 7 times, ...

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  9. A lot of 100 watches is known to have 10 defective watches. If 8 watch...

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  10. Consider the probability distribution of a random variable X: Cal...

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  11. The probability distribution of a random variable X is given below: ...

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  12. For the following probability distribution determine standard deviatio...

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  13. A biased die is such that P(4) = (1)/(10) and other scores being equal...

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  14. A dice is thrown three times. Let X be 'the number of two seen'. Find ...

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  15. Two biased dice are thrown together. For the first dice P(6) = (1)/(2)...

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  16. Two probability distributions of the discrete random variables X and Y...

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  17. A factory produces bulbs. The probability that any one bulb is defecti...

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  18. Suppose you have two coins which appear identical in your pocket. You ...

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  19. Suppose that 6% of the people with blood group O are left handed and 1...

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  20. Two natural numbers r, s are drawn one at a time, without replacement ...

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