Question

8 - Determine a razão em cada PA:
a) (3, 9, 15, 21, ...)
b) (-7, -9, -11, -13, ...)
c) (3, 12, 21, ...) (7,7,7,7,7)
d) (7,7,7,7,7)​

Answer 1

A= 21-15=3

B=-13-11=-2

C=21-12=9 D= 0