jee_main_2026_21_jan_evening - Probability Topics

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QUESTION #10 Probability Distribution
A random variable X takes values 0, 1, 2, 3 with probabilities (2a + 1)/(30), (8a - 1)/(30), (4a + 1)/(30), b respectively, where a, b in R. Let μ and σ respectively be the mean and standard deviation of X such that σ² + μ² = 2. Then (a)/(b) is equal to:
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