" 29.If the "10" th term of an "A.P" .is "21" and the sum of its first ten terms is "120" ,find its "

If the 10 th term of an A.P.is 21 and the sum of its first ten terms is 120, find its nth term.

If the 10 t h term of an A.P. is 21 and the sum of its first ten terms is 120, find its n t h term.

The twelfth term of an A.P. is (-13) and the sum of its first four terms is 24, find the sum of first 10 terms of the A.P.

The 12th term of an AP is -13 and the sum of its first four terms is 24. Find the sum of its first 10 terms.

The twelfth term of an A.P. is (-13) and the sum of its first four terms is 24, find the sum of first 12 terms of the A.P.

The sum of the 4th and 8th terms of an AP is 24 and the sum of its 6th and 10th terms is 44. Find the first terms of the AP.

The sum of the 4th and the 8 the terms of an AP is 24 and the sum of its 6th and 10th terms is 44. Find its first term.

In an A.P., th e sum of its first n terms is 6n-n^(2). Find its 25 th term.

If the sum of first 7 terms of an A.P is 49 and that of its first 17 terms is 289, find the sum of first n terms of the A.P