If the 5th and 12th terms of an A.P. are 30 and 65 respectively, what is the sum of first 20 terms?

If the 5th and 12th terms of an A.P. are 30 and 65 respectively, what is the sum of the first 20 terms ?

If the 5 th and 12 th terms of an A.P.are 30 and 65 respectively,what is the sum of first 0 terms?

In an A.P., if the 5t h and 12 t h terms are 30 and 65 respectively, what is the sum of first 20 terms?

In an A.P., if the 5t h and 12 t h terms are 30 and 65 respectively, what is the sum of first 20 terms?

In an A.P, the 5th and 12th terms are 30 and 65 respectively. What is the sum of the first 20 terms?

If the third and 11th terms of an A.P. are 8 and 20 respectively, find the sum of first ten terms.

If the 5th and 12th terms of an A.P. are 14 and 35 respectively, find the first term and the common difference.

If the 5th and 12th terms of an A.P. are 14 and 35 respectively, find the first term and the common difference.

If 6^(th) and 12^(th) term of an A.P. are 13 and 25 respectively , then its 20^(th) term is