Question

Interpole 7 meios aritméticos entre 3 e 27 ?

Answer 1

an = a1 + (n-1) . r

27 = 3 + (9-1) . r

27 = 3 + 8 . r

27 = 3 + 8r

27 -3 = 8r

24 = 8r

r = 24/8

r = 3


Pa (3, 6, 9, 12, 15, 18, 21, 24, 27)