Question

Ache o sexagésimo número natural ímpar

Answer 1

1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39,41,43,45,47,49,51,53,55,57,59,61,63,65,67,69,71,73,75,77,79,81,83,85,87,89,91,93,95,97,99,101,103,105,107,109,111,113,115,117,119 ...
O sexagésimo número natural é $119$.

Answer 2

Progressão aritmética:

a₁ = 1
a₂ = 3
a₃ = 5
n = 60
r = 3 - 1 = 2

an = a₁ + (n - 1) * r
an = 1 + (60 - 1) * 2
an = 1 + 59 * 2
an = 1 + 118
an = 119

Espero ter ajudado. Valeu!