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1. 2 + 4 + 8 + 16 + .......এই ধারাটির কততম পদের মান 128?

  • A. 5
  • B. 5
  • C. 5
  • D. 5

Answer: Option C

Explanation:

21 = 2

22 = 4

23 = 8

24 = 16

25 = 32

26 = 64

27 = 128

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