Teaching DSSSB TGT Mock Test 2025 Mathematics Sequences and Series Harmonic Progressions

यदि 1 एवं r के मध्य n हरात्मक माध्य प्रविष्ट किए जाए, तो प्रथम माध्य/ nवाँ माध्य किसके बराबर होगा?

1
\(\frac{{n + r}}{{nr - 1}}\)
2
\(\frac{{2n + r}}{{nr - 1}}\)
3
\(\frac{{n - r}}{{nr + 1}}\)
4
\(\frac{{n + r}}{{nr + 1}}\)
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