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Ex 13.2, 12 - Chapter 13 Class 12 Probability
Last updated at July 26, 2026 by Teachoo
Chapter 13 Class 12 Probability
Concept wise
- Conditional Probability - Values given
- Conditional Probability - Statement
- Multiplication rule of probability
- Independent events
-
Basic Probability
- Theorem of total probability
- Bayes theorem
- Random Variable - Defination
- Probability distribution
- Mean or Expectation of random variable
- Variance and Standard Deviation of a Random Variable
- Bernoulli Trials
- Binomial Distribution
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Transcript
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 = 1 − 1/2 × 1/2 × 1/2 = 1 − 1/8 = 𝟕/𝟖
