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Ex 13.2
Ex 13.2, 2
Ex 13.2, 3 Important
Ex 13.2, 4
Ex 13.2, 5
Ex 13.2, 6
Ex 13.2, 7 Important
Ex 13.2, 8
Ex 13.2, 9 Important
Ex 13.2, 10 Important
Ex 13.2, 11 (i)
Ex 13.2, 11 (ii) Important
Ex 13.2, 11 (iii)
Ex 13.2, 11 (iv) Important
Ex 13.2, 12 You are here
Ex 13.2, 13 Important
Ex 13.2, 14 Important
Ex 13.2, 15 (i)
Ex 13.2, 15 (ii)
Ex 13.2, 15 (iii) Important
Ex 13.2, 16 Important
Ex 13.2, 17 (MCQ)
Ex 13.2, 18 (MCQ) Important
Last updated at March 30, 2023 by Teachoo
Ex 13.2, 12 A die is tossed thrice. Find the Probability of getting an odd number at least once.A die is tossed thrice Probability of getting an odd number atleast once = Probability of getting an odd number once + Probability of getting an odd number twice + Probability of getting an odd number thrice = 1 – Probability of getting an odd number 0 times = 1 – Probability of getting an even number all 3 times Now, Probability of getting an even number all 3 times = Probability of getting an even number 1st time × Probability of getting an even number 2nd time × Probability of getting an even number 3rd time Since 2, 4, 6 are even numbers out of 1, 2, 3, 4, 5, 6 Probability of getting an even number = 3/6 = 1/2 Thus, Probability of getting an even number all 3 times = 1/2 × 1/2 × 1/2 = 1/8 Therefore, Probability of getting an odd number at least once = 1 – P(EEE) = 1 – 1/8 = 𝟕/𝟖