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Given three indentical bags each containing 10 balls, whose colours are as follows : Red Blue Green Bag I 3 2 5 Bag II 4 3 3 Bag III 5 1 4 A person chooses a bag at random and takes out a ball. If the ball is Red, the probability that it is from bag I is p and if the ball is Green, the probability that it is from bag III is q, then the value of ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ + q 1 p 1 is :

1. 8
2. 9
3. 7
4. 6 CAREER POINT CAREER POINT Ltd., CP Tower, IPIA, Road No.1, Kota (Raj.), Ph: 081-47250011 www.careerpoint.ac.in 3 JEE Main Online Paper

Correct answer: 7

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