Probability Formulas for JEE 2026
17 formulas in Probability (Maths) How many can you recall?
Binomial distribution P(X=r) = ⁿCᵣ pʳ qⁿ⁻ʳ
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Complement rule
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Addition rule (two events)
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Mutually exclusive union
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Inclusion–exclusion (three events)
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Conditional probability
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Multiplication rule
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Independent events (two events)
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Variance of discrete RV
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Random variable and probability distribution
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At least one success
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De Morgan shortcuts
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Odds and probability
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Law of total probability
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Pairwise vs mutual independence
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Binomial PMF
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Binomial mean and variance
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