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The mean of a set of seven numbers is 81...

The mean of a set of seven numbers is 81. If one of the number is discarded, then the mean of the remaining numbers is 78. The value of discarded number is

A

98

B

99

C

100

D

101

Text Solution

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The correct Answer is:
B
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MTG IIT JEE FOUNDATION-STATISTICS-Olympiad/HOTS Corner
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