Teaching UP TGT Mock Test Series 2025 Mathematics Sequences and Series Arithmetic Progressions

यदि \( x, y, z \) समांतर श्रेणी में हैं और \( \tan^{-1}x, \tan^{-1}y \) तथा \( \tan^{-1}z \) भी समांतर श्रेणी में हैं, तो

1
\( 2x=3y=6z \)
2
\( 6x=3y=2z \)
3
\( 6x=4y=3z \)
4
\( x=y=z \)
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