Question

Tính nhanh: 50 – 18 + 16 + 14 – 12 – 10

Answer 1

50 – 18 + 16 + 14 – 12 – 10 = 50 – 18 – 12 + 16 + 14 – 10 = 50 – 30 + 30 – 10 = 40