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math & puzzles Online Quiz - 106

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Multiple Choice

Madagascar Island, there are x dodos in a particular year. 30 dodos in a thousand of the original population die every year and 25 dodos in a thousand of the original population are born every year. In how many years will the population of dodos halve itself ?

  1. 200
  2. 125
  3. 100
  4. Indeterminate
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