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प्रश्न
Choose the correct alternative:
Which of the following is not possible in probability distribution?
विकल्प
`sum"p"(x) ≥ 0`
`sum"p"(x) = 1`
`sumx"p"(x) = 2`
`"p"(x) = -0.5`
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उत्तर
`"p"(x) = -0.5`
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