Skip to content / Đến nội dung
ThichHocToan.com

TIMO 2026 Grade 3 Preliminary SET 1 - Self-study Question 7

TIMO · TIMO 2026 Grade 3 Preliminary SET 1 - Self-study

Question 7

Find the value of: $3+7+11+15+\cdots+39$
  1. 200
  2. 210
  3. 220
  4. 230