How many terms of the sequence `18 ,\ 16 ,\ 14 ,\ dot` should be taken so that their sum is zero?

How many terms of the sequence 18, 16, 14.... should be taken so that their sum is zero ?

How many terms of the sequence 17,15,13,11..... should be taken so that their sum is zero.

How many terms of the A.P. 9,\ 17 ,\ 25 ,\ dot must be taken so that their sum is 636?

Which term of the sequence 4,\ 9,\ 14 ,\ 19 ,\ dot is 124?

How many terms of the AP 27, 24, 21, ... should be taken so that their sum is zero ?

How many terms of the sequence 54,51,48, ...be taken so that their sum is 513. Explain the double answer.

How many terms of the AP 27, 24, 21 ......should be taken so that their sum is zero.

How many terms of the arithmetic sequence '6,10,14, ……….' should be added to get 720?

Find the sum of 7 terms of the sequence 2, 6, 18,……

How many terms of the A.P. : 24, 21, 18,…………... must be taken so that their sum is 78 ?