Question

What is the next term of the geometric sequence 5, 20,80

Answer 1

a₄ = 320

Explanation:

To obtain a term in a geometric sequence , multiply the previous term by the common ratio r

r =
`(a_(2) )/(a_(1) )` =
`(20)/(5)` = 4 , then

a₄ = 4 × a₃ = 4 × 80 = 320