यदि $\sum_{r=1}^{50} \tan ^{-1} \frac{1}{2 r^2}=p$ है,तो $\tan p$ का मान ज्ञात कीजिए।

  • A
    $\frac{100}{101}$
  • B
    $\frac{51}{50}$
  • C
    $\frac{50}{51}$
  • D
    $\frac{101}{102}$

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