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Olympiad-Math
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Class 9
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Statistics and Probability
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Q)
The mean of 8 observations was found to be 20 . Later it was detected that on eof the observations was found to be misread as 62. What is the correcr observation if the correct mean is 15.5 ?
( A ) 24
( B ) 27
( C ) 26
( D ) 25
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