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#33516 Bangla Language & Literature ধারা Level 0

1 + 3 + 5 + .................... + (2n - 1) ধারাটির যোগফল কত হবে-

  1. A 2n - 12
  2. B n(n + 1)2
  3. C n2
  4. D {n(n + 1)22}
Answer: C - n2

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