Sequences & Series
Harmonic Progression
Grade 11
Question:
<p>If <i>a</i>, <i>b</i>, <i>c</i> are in H.P., then [expression] 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 condition for three terms to be in harmonic progression: if <i>a</i>, <i>b</i>, <i>c</i> are in H.P., then <i>b</i> = 2<i>ac</i>/(<i>a</i>+<i>c</i>).
<p>Solution not provided in source text.</p>
Correct Answer: Unknown