tentukan barisan geometri yang rasionya sama?dengan cara nya please makasih

1. 1/6 × 12/1 = 12/6 = 2
2/3 × 3/1 = 6/3 = 2 rasio = 2
2. -4 : 2 = -2
-16 : 8 = -2 rasio = -2
3. 2√2 : √2 = 2
4√2 : 2√2 = 4
8√2 : 4√2 = 4 rasio = 4
4. 32 : 64 = 1/2
16 : 32 = 1/2
8 : 16 = 1/2 rasio = 1/2