If the sum of an infinitely decreasing GP is 3, and the sum of the squares of its terms…
Mathematics · JEE Main · NTA Exams — Progression and Series
If the sum of an infinitely decreasing GP is 3, and the sum of the squares of its terms is 9/2, the sum of the cubes of the terms is
- 105/13
- 108/13
- 729/8
- none of these
Answer
(B) 108/13
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- The sum of first n terms of the series. 1 – 1 + 1 – 1 + ... is
- If S _ n = n P + n ( n -1) 2 Q , where S n denotes the sum of the first n terms of an A.P., then the common…
- Given below are two statements. STATEMENT - 1: x =1111 91 times is composite number. STATEMENT - 2: 91 is…
- Which of the following sequences is an A.P. with common difference 3 ?
- Let S_ k = _ r=1 ^ k ^ -1 ( 6^ r 2^ 2 r+1 +3^ 2 r+1 ) Then _ k S_ k is equal to
- If (x-y) x and (x+y) are in HP, then x 5 e c(y / 2) is equal to
- If a_ 1 , a_ 2 , a_ 3 , , a_ n+1 are in A.P., then 1 a_ 1 a_ 2 + 1 a_ 2 a_ 3 1 a_ n a_ n+1 , is
- Let the sum of the first n terms of a non-constant A.P., a 1 , a 2 , a 3 , ... be 50 n+ n(n-7) 2 A , where A…
More Progression and Series questions · Browse all practice questions