If a_ 1 , a_ 2 , a_ 3 , , a_ n an are in A.P. and a_ 1 +a_ 4 +a_ 7 + +a_ 16 =114 , then a…
Mathematics · JEE Main · NTA Exams — Progression and Series
If \(a_{1}, a_{2}, a_{3}, \ldots, a_{n}\) an are in A.P. and \(a_{1}+a_{4}+a_{7}+\ldots+a_{16}=114\), then \(\mathbf{a}_{1}+\mathbf{a}_{\mathbf{m}}+\mathbf{a}_{11}+\mathbf{a}_{16}\) is equal to:
- 38
- 98
- 76
- 64
Answer
(C) 76
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- Let a= (x^ 2 +2 x+3 x R ) and b= _ a 1- ^ 2 then the value of _ r=0 ^ n a^ r b^ n-r
- Let 5= 1 n+1 + 1 2(n+1)^ 2 + 1 3(n+1)^ 3 + and T= 1 n - 1 2 n^ 2 + 1 3 n^ 3 - , then :
- The sum of n terms of the following series 1+(1+ x )+ [1+ x + x ^ 2 )+ . will be
- Let T r be the r th term of an A.P., for r = 1, 2, 3,....... If for some positive integers m, n. We have T_ m…
- Find the sum of the series 5+55+555+ n term 5 .
- The value of n, for which a^ n +b^ n a^ n-1 +b^ n-1 is A.M. between a and b is
- If the sum of an infinite decreasing GP is 3 and the sum of squares of it's terms is 9/2, then the sum of…
- Let a_ 1 b_ 1 c form a GP of common ratio r, where 0<r<1 . If a , 2 ~b , 3 c form an AP, then r equals
More Progression and Series questions · Browse all practice questions