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SMO 2006 Senior Round 1 Question 3

SMO · SMO 2006 Senior Round 1

Question 3

What is the last digit of $2^2+20^{20}+200^{200}+2006^{2006}$?
  1. $2$
  2. $4$
  3. $6$
  4. $8$
  5. $0$