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Ex 13.1, 17 (MCQ) - Chapter 13 Class 12 Probability (Term 2)
Last updated at Aug. 11, 2021 by Teachoo
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Ex 13.1
Ex 13.1, 1
Ex 13.1, 2
Ex 13.1, 3 Important
Ex 13.1, 4
Ex 13.1, 5
Ex 13.1, 6 (i)
Ex 13.1, 6 (ii) Important
Ex 13.1, 6 (iii)
Ex 13.1, 7 (i)
Ex 13.1, 7 (ii)
Ex 13.1, 8
Ex 13.1, 9
Ex 13.1, 10 (a) Important
Ex 13.1, 10 (b) Important
Ex 13.1, 11
Ex 13.1, 12 Important
Ex 13.1, 13 Important
Ex 13.1, 14
Ex 13.1, 15
Ex 13.1, 16 (MCQ) Important
Ex 13.1, 17 (MCQ) Important You are here
Chapter 13 Class 12 Probability
Serial order wise
Transcript
Ex 13.1, 17 If A and B are events such that P(A|B) = P(B|A), then (A) A ⊂ B but A ≠ B (B) A = B (C) A ∩ B = φ (D) P(A) = P(B)Given P(A|B) = P(B|A) (𝑃(𝐴 ∩ 𝐵))/(𝑃(𝐴)) = (𝑃(𝐵 ∩ 𝐴))/(𝑃(𝐵)) (𝑃(𝐴 ∩ 𝐵))/(𝑃(𝐴)) = (𝑃(𝐴 ∩ 𝐵))/(𝑃(𝐵)) 1/(𝑃(𝐴)) = 1/(𝑃(𝐵)) ∴ "P(A) = P(B)" So, option (D) is correct (Since "P(B"∩"A)" = "P(A"∩"B) ")
