Let a_ 1 , a_ 2 , , a_ 1 be in AP and h_ 1 , h_ 2 , ., h_ 1 , be in HP. If a _ 1 = h _ 1…
Mathematics · JEE Main · NTA Exams — Progression and Series
Let \(a_{1}, a_{2}, \ldots \ldots, a_{1}\) be in AP and \(h_{1}, h_{2}, \ldots ., h_{1},\) be in HP. If \(\mathrm{a}_{1}=\mathrm{h}_{1}=\mathrm{Z}\) and \(a_{1!}=h_{1!}=3\), then \(a_{4} h_{7}\) is
- \(2\)
- \(3\)
- \(5\)
- \(6\)
Answer
(D) 6
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- If α and β are the roots of the equation 375 x 2 - 25x - 2 = 0, then _ n r=1 _ n r=1 ^ n ^ r + _ n _ n ^ n ^…
- If x, 1, z are in AP and x, 2, z are in GP then x, 4, z are in
- Sum of infinite terms of series 3+5 1 4 +7 1 4^ 2 + . is
- If the roots of the equation x^ 3 -12 x^ 2 +39 x-28=0 are in AP, then the common difference will be
- 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 the infinite series is :
- The sum of the series a – (a + d) + (a + 2d) – (a + 3d) + .... upto (2n + 1) terms is
- n arithmetic means are inserted in between x and 2y and then between 2x and y. In case the r th mean in both…
More Progression and Series questions · Browse all practice questions