Question

1) dadas as PG, determine a razao da cada uma delas:a) (5,45,...)b) (3,21,...)

Answer 1

$Q = \frac{ a_{n} }{ a_{(n -1)} }$

Q = a₂/a₁

a) Q = 45/5
Q = 9

b) Q = 21/3
Q = 7