Question

qual é o 50 numero impar positéria?

Answer 1

$a_1=1\\r=2\\\\a_n=a_1+(n-1)r\\a_{50}=1+(50-1)\cdot2\\a_{50}=1+49\cdot2\\a_{50}=1+98\\\\\boxed{\boxed{a_{50}=99}}$