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#32936 Bangla Language & Literature Equation and Inequality Level 0

If 2n = 128 and y = 5, then 2n - 1 × 5n - 2y - 1 =?

  1. A 100000
  2. B 1000000
  3. C 10000000
  4. D None of these
Answer: A - 100000

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