Question

Interpole 16 meios aritmeticos entre 3 e 88. an =a1+(n-1)×r

Answer 1

AN = A1 +(N - 1) . R
 A18= 3 + (18 - 1) . R
88 = 3 + 17R         o 17 multiplico com o R. 
88 - 3 = 17R
85/17 = R

R = 5

(3,8,13,18,23,28,33,38,43,48,53,58,63,68,73,78,83,88)