જો $\sum_{r=1}^{50} \tan ^{-1} \frac{1}{2 r^{2}}=p$ હોય,તો $\tan p$ નું મૂલ્ય શું છે?

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

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