Question

Which of the following is a geometric sequence? * 2, 4, 6, 8, 10, … 1/2 , 1/4 , 1/8 , 1/16 , … -18, -11, -4, 3, 10,… a, a + b, a + 2b, a + 3b, …

Answer 1

Answer:

1/2,1/4,1/8,1/16

Step-by-step explanation:

In a geometric progression, 2nd term/1st term = 3rd term/2nd term. only the second given sequence satisfies this condition. all the other sequences are in arithmetic progression

Answer 2

Step-by-step explanation:

the ans is in this image