find the sum of the first 11 terms of an ap whose middle term is 30
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given 6th term=30
a+5d=30
sum of 1st 11 terms =11(2a+10d)/2
=11×2×(a+5d)/2
=11×30
=330
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a+5d=30
sum of 1st 11 terms =11(2a+10d)/2
=11×2×(a+5d)/2
=11×30
=330
Mark as brainliest
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