The fifth term of a G.P. is 81 whereas its second term is 24. Find the series and sum of its first eight terms.

The fifth term of a G.P. is 81 and its second term is 24. Find the geometric progression.

The fifth term of GP is 81 and second term is 24. Find the GP

If the sum of the first 9 terms of an A.P. is 81 and that of the first 18 terms is 324, find the sum of its first n terms.

The first term of a G.P. is 27 and its eight term is (1)/(81) . Find the sum of its first 10 terms.

The fifth terms of an A.P. is 30 and its twelfth term is 65, find the sum of its first 20 terms.

The 4th term of a G.P. is square of its second term and the first term is -3. Find its 7th 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 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.

If fifth term of a G.P. is 16 and tenth term is 1/2 , find the G.P. Also find its fifteenth term.

The second term of a GP is 24 and its fifth term is 81. Find the sum of its first five terms.