Some more things together

Level pending
  1. Find the interior angle of a regular dodecagon. Let this angle be \(20x\) degrees
  2. Find the number of trailing zeros of this product: \(2*4*6*8...*2014\). This number can be prime factorised into \(p^2*q\)
  3. Now, a person wants to choose \(xp\) people out of a total of q people, how many combination are there?
  4. What are the first five digits to the question? This is the answer.
  5. You are allowed to use a calculator.

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