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Sequences and Series question

2025 · 8 Apr · Shift 2 · Q28
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  5. /2025 · 8 Apr · Shift 2 · Q28

Sequences and Series question

2025 · 8 Apr · Shift 2 · Q28

JEE MainMathematicsSequences and SeriesMCQ+4 / −1
If 114+124+134+…∞=π490\frac{1}{1^4} + \frac{1}{2^4} + \frac{1}{3^4} + \ldots \infty= \frac{\pi^4}{90}141​+241​+341​+…∞=90π4​, 114+134+154+…∞=α\frac{1}{1^4} + \frac{1}{3^4} + \frac{1}{5^4} + \ldots \infty= \alpha141​+341​+541​+…∞=α, 124+144+164+…∞=β\frac{1}{2^4} + \frac{1}{4^4} + \frac{1}{6^4} + \ldots \infty= \beta241​+441​+641​+…∞=β, then αβ\frac{\alpha}{\beta}βα​ is equal to :
  1. A
    23
  2. B
    14
  3. C
    18
  4. D
    15
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