Is `0` a term of A.P `200,196,192,...,200?` if yes,what is its order?

Find whether 55 is a term of the A.P. 7, 10, 13, … or not. If yes, find which term is it.

Is the sequence 12, 8,4,0…………. An A.P.? If yes, state is first term and common differnce.

If nth term of an A.P. is (2n+1), what is the sum of its first three terms?

If m times the mth term of an A.P. is equal to n times its nth term, find (m + n) th term of the A.P.:

If the sum of the first 10 terms of an A.P. is 1,200 and First term is 30. Then find the 6^(th) term.

The 9th term of an A.P. is equal to 6 times its second term. If its 5th term is 22, find the A.P.

The 5th and 11th terms of an A.P. are 41 and 20 respectively. What is its first term ? Find the sum of its first eleven terms.

If n^(th) term of an A.P. is (2n + 1), what is the sum of its first three terms ?

If 7 times the 7th term of an A.P. is equal to 11 times its eleventh term then the 18th term of the A.P. is ___

If m times the mth term of an A.P is equal to n times its nth term then show that (m+n)th term of the A.P is zero .