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JEE Mains · Maths · STD 11 - 8. sequence and series

ધારો કે \(A_{1}, A_{2}, A_{3}, \ldots\) એ ધન વાસ્તવિક સંખ્યાઓની વધતી સમગુણોત્તર શ્રેણી છે. જો \(A _{1} A _{3} A _{5} A _{7}=\frac{1}{1296}\) અને d \(A _{2}+ A _{4}=\frac{7}{36}\), હોય તો \(A _{6}+ A _{8}+ A _{10}\) નું મૂલ્ય................

  1. A \(33\)
  2. B \(37\)
  3. C \(43\)
  4. D \(47\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(43\)

Step-by-step Solution

Detailed explanation

\(A _{1} \cdot A _{3} \cdot A _{5} \cdot A _{7}=\frac{1}{1296}\) \(\left( A _{4}\right)^{4}=\frac{1}{1296}\) \(A _{4}=\frac{1}{6}.....(1)\) \(A _{2}+ A _{4}=\frac{7}{36}\) \(A _{2}=\frac{1}{36}.....(2)\) \(A _{6}=1\) \(A _{8}=6\) \(A _{10}=36\) \(A _{6}+ A _{8}+ A _{10}=43\)
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