Question

Which sequence is a geometric progression?

A 2 4 6 8
B 1 1 2 3
С 1 2 4 8
D 1 3 5 7

Answer 1

c) 1 2 4 8

Explanation:

Explanation :-

Geometric sequence

The sequence is of the form a , a r , a r² , a r³ ,.......

'a' is the first term

'r' is the common ratio

1 , 1(2) , 1( 2)² , 1( 2 )³ ...... is a geometric sequence

here a = 1

common ratio
`r = (a_(2) )/(a_(1) ) = (2)/(1) = 2`

`r = (4)/(2) = 2`

`r = (8)/(4) = 2`

The sequence 1 2 4 8 is a geometric sequence