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Suppose a child’s status in Math is equivalent to 9 years, in Science 10 years, in English 11 years and Hindi 12 years then his educational age is

In a class, 30% students fail in English, 20% students fail in Hindi and 10% students fail in both English and Hindi. A student is chosen at random, then what is the probability he fail in English, if he has failed in Hindi?

CBSE Class 10 Maths | Most Important Questions For 4 Marks | Most Expected Questions | CBSE Board

In a committee, 50 people speak Hindi, 20 speak English and 10 speak both Hindi and English . How many speak at least one of these two languages ?

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In a class, 30% students study English, 15% study Hindi and 10% study both English and Hindi. One student is selected at random. Find the probability that (i) He studies English if it known that he Hindi (ii) He studies Hindi if it is known that he studies English

1.0 M solution of which of the following salts is most basic ?

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