Question

Calcule o 40 termo da P. A(26,31,36,41...)

Answer 1

r = a₂ - a₁
r = 31 - 26  → 5

$A_{n} = a_{1} + (n -1) . r$
a₄₀ = 26 + 39 . 5
a₄₀ = 26 + 195
a₄₀ = 221