# NCERT Solutions for Class 12-science Maths Chapter 13 - Probability

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## Chapter 13 - Probability Exercise Ex. 13.2

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i. Probability that the problem is solved = P(A  B)

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## Chapter 13 - Probability Exercise Misc. Ex.

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Probability of having heart attack if he is treated with mediation then mediation reduce the risk by 30%.

Hence there is a risk of 70%.

P(A|E1) = 0.40 × 0.70 = 0.28

Probability of having heart attack if he is treated with drugs then mediation reduce the risk by 25%.

Hence there is a risk of 75%.

P(A|E2) = 0.40 × 0.75 = 0.30

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