A letter is known to have arrived by post either from KANPUR... — JEE PYQs | Mockzy

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A letter is known to have arrived by post either from KANPUR or from ANANTPUR. On the envelope just two consecutive letters AN are visible. The probability, that the letter came from ANANTPUR, is:

\frac{7}{19}

\frac{10}{17}

\frac{10}{19}

\frac{10}{19}

Let tan A, tan B, where , be the roots of the quadratic equation . Then is equal

The mean deviation about the mean for the data Xi 5 7 9 10 12 15 fi 8 6 2 2 2 6

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