The sum of the terms of an infinite geometric progression is 3 and the sum of the squares of the terms is 81. Find the first term of the series.

The sum of an infinite geometric series is 15 and the sum of the squares of these terms is 45.Find the series.

The sum of an infinite geometric series is 15 and the sum of the squares of these terms is 45. Find the series.

If the sum of an infinite geometric series is 15 and the sum of the squares of these terms is 45 , find the G.P.

The sum of an infinite geometric progression is 243 and the sum of its first five terms is 275 The first term of the progression

The sum of an infinite series is 15 and the sum of the squares of these terms is 45. Find the series.

The sum of the first three terms of an arithmetic progression is 9 and the sum of their squares is 35. The sum of the first n terms of the series can be

The sum of the first three terms of an arithmetic progression is 9 and the sum of their squares is 35. The sum of the first n terms of the series can be

The sum of the first three terms of the arithmetic progression is 30 and the sum of the squares of the first term and the second term of the same progression is 116. Find the seventh term of the progression if its fith term is known to be exactly divisible by 14.

The sum of an infinite geometric progression is 6, If the sum of the first two terms is 9//2 , then what is the first term?