23rd term of an arithmetic sequence is 32.35th term is 104. Then Find the sum of first 35 terms of this sequence.

23^(rd) term of an arithmetic sequence is 32. 35^(th) term is 104. Then which is the middle term of first 35 terms of this sequence?

Find the sum of first 11 terms of the sequence 20,25,30.......

The algebraic form of an arithmetic sequence is 8n+7 . Find the sum of first 30 terms of this sequence.

23^(rd) term of an arithmetic sequence is 32. 35^(th) term is 104. Then what is the common difference?

The algebraic form of an arithmetic sequence is 6n+5. Find the sum of first 20 terms of this sequence?

The sum of first n terms of an arithmetic sequence is n^2+2n What is the sum of first 20 terms of this sequence?

What is sum of the first.20 natural numbers? ii) The algebraic form of an arithmetic sequence is 6n+5. Find the sum of the first 20 terms of this sequence.

Sum of first n terms of an arithmetic sequence is 8n^2 +5n. Find the sum of first 20 terms.

23^(rd) term of an arithmetic sequence is 32. 35^(th) term is 104. Then a) What is the common difference? b) Which is the middle term of first 35 terms of this sequence? c) Find the sum of first 35 terms of this sequence.

The sum of the first and 21^(th) terms of an arithmetic sequence is 140.Calculate the sum of first 11 terms of this sequence,if the first term is 10.