the average of five numbers is 28 if one of the number is excluded by 2, the average gets reduced by 2. what is the excluded number
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Mean of 5 nos.= 28
Therefore, sum of the 5 nos. = 28 X 5 = 140
The the no. exclude by 'x'.
New sum of 4 nos.= 140 - x
New mean = 28- 2 = 26
Therefore, (140 - x ) / 4 = 26
=> 140 - x = 104
=> x = 36
ANSWER= 36
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