Question

interpole 4 meios aritmetios entre 11 e 26

Answer 1

an = a1 + (n-1) r

26 = 11 + (6-1)r

26 = 11 + 5r

26 - 11 = 5r

15 = 5r

r = 15/5

r = 3

{11| 14-17-20-23 | 26}