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IKMC 2014 - Grades 11-12 - Self-study Question 15

IKMC · IKMC 2014 - Grades 11-12 - Self-study

Question 15

Six weeks equal n! seconds, where n!=n(n−1)…2·1. Find n.
  1. 6
  2. 7
  3. 8
  4. 10
  5. 12