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प्रश्न
Choose the correct alternative:
If P(X = 0) = 1 – P(X = 1). If E[X] = 3 Var(X), then P(X = 0) is
विकल्प
`2/3`
`2/5`
`1/5`
`1/3`
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उत्तर
`1/3`
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