find the sum of 11 term when the middle term is 30
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n= 11(total no. of terms)
(a1+a11)÷2=30(middle term)
Which gives A1+A11 = 60
Now sum =n × (A+A11)÷2
=11×60÷2
=11 × 30
=330 IS THE ANSWER
(a1+a11)÷2=30(middle term)
Which gives A1+A11 = 60
Now sum =n × (A+A11)÷2
=11×60÷2
=11 × 30
=330 IS THE ANSWER
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