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

A bag contains 4 red and 4 black balls, another bag contains 2 red and 6 black balls. One of the two bags is selected at random and a ball is drawn from the bag which is found to be red. Find the probability that the ball is drawn from the first

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The correct Answer is:
`(2)/(3)`.
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A bag contain 4 red and 4 black ball.another bag contain 2 red and 6 black ball.One of the two bags is selected at random and a ball is drawn from the bag which is found to be red. Find thye probability that the ball is drawn from the first bag.

A bag contains 4 red and 4 black balls,another bag contains 2 red and 6 black balls.One of the two bags is selected at random and two balls are drawn at random without replacement from the bag and are found to be both red.Find the probability that the balls are drawn from the first bag.

(a) (i) Bag I contains 5 red and 3 black balls, Bag II contains 6 red and 5 black balls. One bag is chosen at random and a ball is drawn which is found to be black. Find the probability that it was drawn from Bag I, (II). (ii) Bag I contains 3 red and 5 white balls and bag II contains 4 red and 6 white balls. One of the bags is selected at random and a ball is drawn from it. The ball is found to be red. Find the probability that ball is drawn from Bag II. (b) Bag I contains 4 black and 6 red balls, bag II contains 7 black and 3 red balls and bag III contains 5 black and 5 red balls. One bag is chosen at random and a ball is drawn from it which is found to be red. Find the probability that it was drawn from bag II.

One bag contains 3 red and 5 black balls. Another bag contains 6 red and 4 black balls. A ball is transferred from first bag to the second bag and then a ball is drawn from the second bag. Find the probability that the ball drawn is red.

(i) Bag I contains 3 red and 4 black balls while another bag II contains 5 red and 6 black balls. One ball is drawn at random from one of the bags and it is found to be red. Find the probability that it was drawn from bag II. (ii) There are two bags I and II. Bag I contains 4 white and 3 red balls and bag II contains 6 white and 5 red balls. One ball is drawn at random from one of the bags and is found to be red. Find the probability that it was drawn from bag II.

Bag I contains 3 red and 4 black balls while another Bag II contains 5 red and 6 black balls.One ball is drawn at random from one of the bags and it is found to be red.Find the probability that it was drawn from Bag II.

Bag l contains 5 red and 3 black balls. Bag II contains 6 red and 5 black balls. One bag is chosen at random and a ball is drawn which is found to the black. Find the probability it was drawn from bag I.

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MODERN PUBLICATION-PROBABILITY-EXERCISE 13 (d) (LATQ)
  1. As man is known to speak truth 3 out of 4 times. He throws a die and ...

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  2. Three bags contain : (i) 4 red and 4 black, 2 red and 6 black balls ...

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  3. (i) Bag I contains 3 red and 4 black balls while another bag II contai...

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  4. A bag contains 4 red and 4 black balls, another bag contains 2 red and...

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  5. (a) (i) Bag I contains 5 red and 3 black balls, Bag II contains 6 red ...

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  6. Given three identical boxes I, II and III, each containing two coins. ...

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  7. In a tape recorder factory three machines A, B and C produced 50%, 30%...

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  8. A company has two plants to manufacture scooters. Plant I manufactures...

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  9. An insurance company insured 2000 scooter drivers, 4000 car drivers...

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  10. A doctor is to visit a patient. From the past experience, it is known ...

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  11. (i) A man is known to speak the truth 3 out of 4 times. He throws a di...

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  12. A bag contains 4 balls. Two balls are drawn at random, and are foun...

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  13. Of the students in a college, it is known that 60% reside in hostel ...

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  14. A laboratory blood test is 99% effective in detecting a certain dis...

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  15. Suppose, a girl throws a die. If she gets a 5 or 6 she tosses a coin t...

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  16. There are three coins. One is a two headed coin (having head on both ...

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  17. In a certain college, 4% of boys and 1% of girls are taller than 1....

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  18. Bag I contains 2 white, 1 black and 3 red balls, Bag II contains 3 whi...

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  19. (i) Coloured balls are distributed in three bags as shown in the follo...

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  20. The members of a consulting firm rent cars from three rental agencies ...

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