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Find the sum of 11 terms …

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Find the sum of 11 terms of an ap whose middle term is 30

Posted by Deepchand Thapliyal 5 years, 11 months ago

CBSE > Class 10 > Mathematics

5 answers

Deepchand Thapliyal 5 years, 11 months ago

Thanks guys me confuse ho gayi thii

Rohit Solanky 5 years, 11 months ago

Baad me common aa jaayega

Rohit Solanky 5 years, 11 months ago

Bro waha pe solve mat karo means a+5d=6 hi rhene do

Lakshita Sharma 5 years, 11 months ago

In this we have a6 =30 so,a+ 5d =30, a=30-5d, S6=n\2(2a +(n-1)d), 11/2(2×(30-5d)+(11-1)d),11/2(60-10d+10d),11/2×60,330

Rohit Solanky 5 years, 11 months ago

330

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