1.19 + 5 - 4 x 2 ÷ 4 = 11
2.19 x 5 - 4 ÷ 2 + 4 = 16
3.19 ÷ 5 + 4 - 2 x 4 = 13
4.19 ÷ 5 + 4 + 2 ÷ 4 = 20
Answer:3