S

Sandhya Thakur • 4.08K Points
Extraordinary Reasoning 

Q. Which term of the series 5,10, 20, 40,...................is 1280 ?

  • (A) 10th
  • (B) 9th
  • (C) 8th
  • (D) None of these
Correct Answer - Option(B)
Explanation by: Sandhya Thakur 
Clearly, 5 × 2 = 10, 10 × 2 =20, 20 × 2 = 40,.............................

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