Answer:
1. True
2. False
Step-by-step explanation:
1. Example: Given that x,y,z are 2,4,6 respectively:
2^2=4
2^4=16
2^6=64
16/4=4
64/16=4
common ratio=4
therefore, it is geometric
2. Example: Given that a,b,c are 2,4,6 respectively:
2*2=4
2*4=8
2*6=12
8/4=2
12/8=3/2
Therefore, it is not geometric