Sequences & Series
Combined Progressions
Grade 11
Question:
<p>If <i>l</i>, <i>m</i>, <i>n</i> are three numbers in G.P., then the ratio of first term to the common difference of an A.P. whose <i>l</i><sup>th</sup>, <i>m</i><sup>th</sup> and <i>n</i><sup>th</sup> terms are in H.P. is equal to</p>
<p>(A) [Option A not provided]</p>
<p>(B) [Option B not provided]</p>
<p>(C) [Option C not provided]</p>
<p>(D) [Option D not provided]</p>
Step-by-Step Solution
Key Concept: Apply the conditions that <i>l</i>, <i>m</i>, <i>n</i> are in G.P. and that specific terms of an A.P. are in H.P.
<p>Solution not provided in source text.</p>
Correct Answer: Unknown