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average of 6terms is 30
sum of observation/no of observation=average
sum of 6 terms /6=30
sum of 6terms is 180
sum of 5terms is 145
now the excluded one =180-145
excluded=35
sum of observation/no of observation=average
sum of 6 terms /6=30
sum of 6terms is 180
sum of 5terms is 145
now the excluded one =180-145
excluded=35
Answered by
1
option c is the answer .
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