Question
1500 Â Â Â 150Â Â Â 30Â Â Â ? Â Â Â Â 3.6Â Â
  1.8 What will come in the place of question mark (?) in the following number series?Solution
1500 × (10/100) = 150 150 × (20/100) = 30 30 × (30/100) = 9 9 × (40/100) = 3.6 3.6 × (50/100) = 1.8
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