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A bag contains 9 discs of which 4 are re...

A bag contains 9 discs of which 4 are red, 3 are blue and 2 are yellow. The discs are similar in shape and size. A disc is drawn at random from the bag. Calculate the probability that it will be (i) red, (ii) yellow, (iii) blue, (iv) not blue, (v) either red or yellow.

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The correct Answer is:
i. `(4)/(9)`, ii. `(2)/(9)`, iii. `(1)/(3)`, iv. `(2)/(3)`, v. `(7)/(9)`
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NEW JOYTHI PUBLICATION-PROBABILITY-EXAMPLES
  1. If A and B are events such that P(A)=(1)/(5), P(B) =(1)/(3) and "P(A ...

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  2. A and B are two events such that P(A) = 0.5, P(B) = 0.6 and P(A cap B)...

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  3. A bag contains 9 discs of which 4 are red, 3 are blue and 2 are yellow...

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  4. Two students A and B, appeared in an examination. The probability that...

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  5. Two students Anil and Ashima appeared in an examination. The probabili...

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  6. Find the probability that when a hand of 7 cards is drawn from a well ...

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  7. In a class of 60 students, 30 opted for NCC, 32 opted for NSS and 24 o...

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  8. A fair coin with 1 marked on one face and 6 on the other and a fair di...

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  9. There are four men and six women on the city council. If one council m...

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  10. In a lottery, a person choses six different natural numbers at random ...

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  11. Check whether the following probabilities P(A) and P(B) are consistent...

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  12. Events E and F are such that P(not E or not F) = 0.25, State whether E...

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  13. A and B are events such that P(A) = 0.42, P(B) = 0.48 and P(A and B) =...

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  14. In Class XI of a school 40% of the students study Mathematics and 30% ...

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  15. In an entrance test that is graded on the basis of two examinations, t...

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  16. The probability that a student will pass the final examination in both...

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  17. A box contains 10 red marbles, 20 blue marbles and 30 green marbles. 5...

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  18. 4 cards are drawn from a well - shuffled deck of 52 cards. What is the...

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  19. A die has two faces each with number '1', three faces each with number...

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  20. In a certain lottery 10,000 tickets are sold and ten equal prizes are ...

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