The third term of a geometric progression is 4. Then the product of the first five terms is a.`4^3` b. `4^5` c. `4^4` d. none of these

The 4th term of a geometic progression is 2/3 and the seventh term is 16/81 . Find the geometic series.

The first term of an arithmetic progression is 1 and the sum of the first nine terms equal to 369 . The first and the ninth term of a geometric progression coincide with the first and the ninth term of the arithmetic progression. Find the seventh term of the geometric progression.

Find the geometric progression whose 4th term is 54 and the 7th term is 1458.

The sum of first 5 terms of an arithmetic progression is 80,third term will be __

The first product of C_(4) pathway is

If the first term of an A.P. is 2 and common difference is 4, then the sum of its first 40 terms is-

If the fourth term of a series in geometric progression is 24 and the seventh term is 192, find the sum of its first ten terms.

Find four numbers forming a geometric progression in which the third term is greater than the first term by 9, and the second term is greater than the 4^("th") by 18.

The sum of n terms of two arithmetic progressions are in the ratio 5n+4:9n+6. Find the ratio of their 18th terms.

The sum of the first 4 terms of a G.P. is 40 and the sum of first 8 terms is 3280. Obtain the G.P.