25. A bag A contains 2 white & 3 red balls & bag B contains 4 white & 5 red balls. One ball is drawn at random from a randomly chosen bag and is found to be red. The probability that it was drawn from bag B was :
(a) 5/14 (b) 5/16 (c) 5/18 (d) 25/52
Answer
Answer : (d)
Explanation
Explanation : No answer description available for this question. Let us discuss.
Probability » Exercise - 136. A bag contains 3 red, 4 white and 5 blue balls. All balls are different. Two balls are drawn at random. The probability that they are of different colour, is : (a) 47/66 (b) 10/33 (c) 5/22 (d) none of these
Probability » Exercise - 133. A bag contains 3 white, 3 black and 2 red balls. One by one three balls are drawn without replacing them. The probability that the third ball is red, is : (a) 1/2 (b) 1/3 (c) 2/3 (d) 1/4
Probability » Exercise - 129. One bag contains 5 white & 4 black balls . Another bag contains 7 white and 9 blac k balls . A ball is transferred from the first bag to the second and then a ball is drawn from second . The probability that the ball is white is : (a) 8/17 (b) 40/153 (c) 5/9 (d) 4/9
Probability » Exercise - 1 1. Two balls are drawn at random with replacement from a box containing 10 black and 8 red balls. Find the probability that both balls are red ? (a) 8/81 (b) 16/81 (c) 20/81 (d) 40/81 2. Two cards are drawn at random and without replacement from a pack of 52 playing cards. Find the probability that both the cards are black ? (a) 7/109 (b) 6/109 (c) 10/102 (d) 25/102 3. A die is tossed thrice. Find the probability of getting an odd number at least once ? (a) 7/5 (b) 6/5 (c) 7/8 (d) 2/8 4. The probability of obtaining an even prime number on each die, when a pair of dice is rolled is : (a) 0 (b) 1/3 (c) 1/12 (d) 1/36 5. 6 coins are tossed simultaneously . The probability of getting atleast 6 heads is : (a) 57/64 (b) 229/256 (c) 7/64 (d) 37/256 6. A single letter is selected at random from the word “PROBABILITY”. The probability that the selected letter is a vowel is : (a) 2/11 (b) 3/11 (c) 4/11 (d) 0 7. A coin is tossed and a dice is rolled . The probability that the coin shows the head and the dice shows 6 is :…
Probability » Exercise - 1 1. Two balls are drawn at random with replacement from a box containing 10 black and 8 red balls. Find the probability that both balls are red ? (a) 8/81 (b) 16/81 (c) 20/81 (d) 40/81
Probability » Exercise - 136. A bag contains 3 red, 4 white and 5 blue balls. All balls are different. Two balls are drawn at random. The probability that they are of different colour, is : (a) 47/66 (b) 10/33 (c) 5/22 (d) none of these