1..........2.........3...........20
------ • ------ • ------ • -------- • 7
2.........3.........4............21

YUKARIDAKİ İSLEMİN SONUCU KAÇTIR?

........2
A) 1 -----
........3








.........3
B) 1 -----
.........4








...........1
C) 2 -----
..........2






...........3
D) 2 -----
...........4​