Question

Numa P.A de 27 termos o 1* termo e 15 e a razão e 8 qual o último termo?​

Answer 1

$\mathtt{a_{27}=a_{1}+26r}\\\mathtt{a_{27}=15+26.8}\\\mathtt{a_{27}=15+208}\\\huge\boxed{\boxed{\mathtt{a_{27}=223}}}\\\mathtt{\maltese~~Rubens~Vlaxius}$