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11th Standard English Medium Business Maths Subject Descriptive Statistics and Probability Creative 3 Mark Questions with Solution Part - I

11th Standard

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Business Maths

Time : 00:30:00 Hrs
Total Marks : 15
    5 x 3 = 15
  1. A fair die is rolled. A = {1, 3, 5} B = {2, 3} and C = {2, 3, 4, 5}. Find (i) P(A/B) and P(B/A) (ii) P(A/C) and p(C/A).

  2. Mother, father and son line up at random for a family picture. Find P(A/B) if A and B are defined as follows A = Son on one end, B = Father in the middle.

  3. A and B are two events such that P(A)\(\neq \)0. find P(B/A) if (i) A is a subset of B (ii) \(A\cap B=\phi \)

  4. Events A and B are such that P(A)=\(\frac { 1 }{ 2 } \), P(B)=\(\frac { 7 }{ 12 }\), and P(not A or not B) = \(\frac { 1 }{ 4 }\), state whether A and B are independent?

  5. Find the probability of drawing a one-rupee coin from a purse with two compartments one of which contains 3 fifty-paise coins and 2 one-rupee coins and other contains 2 fifty paise coins and 3 one-rupee coins.

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