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A bag contains 4 red and 3 black balls. ...

A bag contains 4 red and 3 black balls. A second bag contains 2 red and 4 black balls. One bag is selected at random. From the selected bag, one ball is drawn. Find the probability that the ball drawn is red.

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MODERN PUBLICATION-PROBABILITY-EXERCISE
  1. An urn contains 10 black and 5 white balls. Two balls are drawn from t...

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  2. A bag contains 5 white and 3 black balls. Four balls are successively ...

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  3. A bag contains 4 red and 3 black balls. A second bag contains 2 red an...

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  4. Three cards are drawn successively, without replacement from a pack of...

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  5. A bag A contains 6 white and 7 black balls while the other bag B conta...

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  6. There are three urns A,B and C . Urn A contains 4 white balls and 5 bl...

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  7. A speaks truth in 70% of the cases and B in 80% of the cases. In what ...

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  8. A speaks truth in 75% of cases and B in 80% of cases. The percentage o...

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  9. A and B toss a coin alternately till one of them tosses a head and win...

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  10. A and B throw a die alternatively till one of them gets a ‘6’ and wins...

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  11. A and B throw a die alternatively till one of them gets a ‘6’ and wins...

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  12. A and B throw a pair of dice alternately, till one of them gets a tota...

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  13. A, B and C in tum throw a die and one who gets a 6 first wins the game...

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  14. A, B and C in tum throw a die and one who gets a 6 first wins the game...

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  16. A husband and his wife appear for an interview for two parts. The prob...

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  17. Amit and Nisha appear for an interview for two vacancies in a company....

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  18. A problem is given to three students, whose chances of solving it are ...

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  19. A bag contains 50 tickets numbered 1, 2, 3, .., 50 of which 5 are draw...

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  20. A bag contains 100 bolts and 300 nuts, 50% of each have been rusted. O...

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