Answer:
2
Step-by-step explanation:
Factors of 18: 1, 2, 3, 6, 9, 18
Factors of 32: 1, 2, 4, 8, 16, 32
Here, the common factors betwen 18 and 32 are 1 and 2. So, GCF is 1 * 2 = 2
18 = 2 * 9
32 = 2 * 16
