Question

which of the foollowing are geometric sequences.
a. 3, -15, 75, -375, 1875....
b. 4/9, 2/3, 1, 3/2, 9/4
c. 1/3, 2/9, 3/27, 4/81, 5/343
d. 3, -15, -33, -51, -69
e. 2, 3, 5, 9, 17

Answer 1

Which of them has a common ratio i.e a number which is being multiplied every time?

Answer 2

how do i check the fraction ones

Answer 3

@ParthKohli

Answer 4

See if you are multiplying the same number over and over again. This applies for fractions too :)

Answer 5

to check the fractions second term / first term