[tex] > resolucao \\ \\ \geqslant progressao \: aritmetica \\ \\ r = a2 - a1 \\ r = 9 - 1 \\ r = 8 \\ \\ \\ \geqslant \: o \: 106 \: termo \: da \: pa \\ \\ an = a1 + (n - 1)r \\ an = 1 + (106 - 1)8 \\ an = 1 + 105 \times 8 \\ an = 1 + 840 \\ an = 841 \\ \\ \\ > < > < > < > < > < > < > < > > > [/tex]
