1) A) 18 C 3 D 6 B 8 C 4 G 12 B) 18 A 3 E 6 B 8 G 4 B 12 C) 18 C 3 G 6 B 8 B 4 D 12 D) 18 F 3 B 6 E 8 G 4 E 12 Answer: Option CExplanation:18 / 3 - 6 + 8 + 4 =12 or 6- 6 +8+4=12 or 12=12