`AP, x-7,x-2,x+3,..............` then find `15th` term

If the P th term of an AP is (3P - 5), then find the common difference and 15th term of this AP.

If the 9th and 21st terms of an A.P. are 75 and 183 respectively, then find the 15th term.

If the n^(th) term of the A.P. 9, 7, 5, .... is same as the n^(th) term of the A.P. 15, 12, 9, .... find n.

If sum of 3rd and 8th term of an A.P is 7 and sum of 7th and 14th term is -3 , then find 10th term.

If sum of the 3rd and the 8th terms of an AP is 7 and the sum of the 7th and 14th terms is -3, then find the 10th term.

If sum of the 3rd and the 8th terms of an AP is 7 and the sum of the 7th and 14th terms is -3 , then find the 10th term.

The sum of first n terms of an AP is (3n^2+6n) Find the n^(th) term and 15^(th) terms of the AP

If sum of 3^(rd) and 8^(th) terms of an A.P. is 7 and sum of 7^(th) and 14^(th) terms is -3 then find 10^(th) term.

(a) Find the value of 'x if x + 1, 2x + 1 and x + 1 are in A.P. Also find the 4th term of this progression. (b) If k + 3, 2k + 1, k + 7 are in A.P., then find this progression upto 5 terms.

(a) Find the value of 'x if x + 1, 2x + 1 and x + 1 are in A.P. Also find the 4th term of this progression. (b) If k + 3, 2k + 1, k + 7 are in A.P., then find this progression upto 5 terms.