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VTMO 2015 — Grade 7 — semifinal Question 1

VTMO · VTMO 2015 — Grade 7 — semifinal

Question 1

Find the last digit of $2015^{0} + 2015^{1} + \ldots + 2015^{15}$.
  1. $1$
  2. $5$
  3. $6$
  4. $7$
  5. $9$