$\frac{1}{3 \cdot 5} + \frac{1}{5 \cdot 7} + \frac{1}{7 \cdot 9} + \ldots$ $24$ पदों तक $=$

  • A
    $\frac{23}{147}$
  • B
    $\frac{6}{35}$
  • C
    $\frac{6}{37}$
  • D
    $\frac{8}{51}$

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Similar Questions

अनंत श्रेणी ${\tan ^{ - 1}}\left( {\frac{2}{{1 - {1^2} + {1^4}}}} \right) + {\tan ^{ - 1}}\left( {\frac{4}{{1 - {2^2} + {2^4}}}} \right) + {\tan ^{ - 1}}\left( {\frac{6}{{1 - {3^2} + {3^4}}}} \right) + \dots$ का योग क्या है?

श्रेणी $\frac{3}{1^2} + \frac{5}{1^2 + 2^2} + \frac{7}{1^2 + 2^2 + 3^2} + ...$ के $n$ पदों का योग ज्ञात कीजिए।

$\sum\limits_{r = 0}^{100} {(r^2 + 4r + 4)(r + 1)!}$ का मान :-

योग $1(1!) + 2(2!) + 3(3!) + \dots + n(n!)$ किसके बराबर है?

Difficult
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यदि $n = 1, 2, 3, \dots$ के लिए ${t_n} = \frac{1}{4}(n + 2)(n + 3)$ है,तो $\frac{1}{t_1} + \frac{1}{t_2} + \frac{1}{t_3} + \dots + \frac{1}{t_{2003}} = $

Difficult
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