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in Probability
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If the marks obtained by the students in a competitive exam follows normal distribution with mean value 50 and variance 10. If the passing marks is 40 then percentage of failed students is ____%
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Seems like right I think @Satbir

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 please recheck if variance is 10 or standard deviation

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Already checked variance=10 given. It may be error @Mk Utkarsh

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