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A bag contains 12 blue balls and x red b...

A bag contains 12 blue balls and x red balls. If one ball is drawn at random (i) what is the probaility that it will be a red ball ? (ii) If 8 more red balls are put in the bag, and if the probability of drawing a red ball will be twice that of the probaility in (i), then find x.

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PREMIERS PUBLISHERS-STATISTICS AND PROBABILITY -SOLUTION TO EXERCISE 8.3
  1. At a fete, cards bearing numbers 1 to 1000, one number on one card are...

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  2. A bag contains 12 blue balls and x red balls. If one ball is drawn at ...

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  3. A bag contains 12 blue balls and x red balls. If one ball is drawn at ...

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  4. Two unbiased dice are rolled once. Find the probaility of getting. (...

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  5. Two unbiased dice are rolled once. Find the probaility of getting. (...

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  6. Two unbiased dice are rolled once. Find the probaility of getting. (...

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  7. Two unbiased dice are rolled once. Find the probaility of getting. (...

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  8. Three fair coins are tossed together. Find the probability of getting ...

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  9. Three fair coins are tossed together. Find the probaility of getting (...

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  10. Three fair coins are tossed together. Find the probaility of getting (...

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  11. Three unbiased coins are tossed once. Find the probability of getting ...

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  12. Two dice are numbered 1,2,3,4,5,6 and 1,1,2,2,3,3 respectively. They a...

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  13. A bag contains 5 red balls, 6 white balls, 7 green balls, 8 black ball...

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  14. A bag contains 5 red balls, 6 white balls, 7 green balls, 8 black ball...

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  15. A bag contains 5 red balls, 6 white balls, 7 green balls, 8 black ball...

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  16. A bag contains 5 red balls, 6 white balls, 7 green balls, 8 black ball...

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  17. In a box there are 20 non-defective and some defective bulbs. If the p...

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  18. The king and queen of diamonds, queen and jack of hearts, jack and kin...

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  19. The king and queen of diamonds, queen and jack of hearts, jack and kin...

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  20. The king and queen of diamonds, queen and jack of hearts, jack and kin...

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