The remainder when 3⁰ + 3¹ + 3² + 3³ + . . . . . . . + 3²⁰⁰ is divided by 13 is:

Explanation:-

$$\eqalign{ & {\text{The}}\,{\text{given}}\,{\text{expression}}\,{\text{is}}\,{\text{in}}\,{\text{GP}}\,{\text{series}} \cr & S = {3^0} + {3^1} + {3^2} + {3^3} + ........ + {3^{200}} \cr & S = \left[ {\frac{{\left\{ {{3^0} \times \left( {{3^{201}} - 1} \right)} \right\}}}{{\left( {3 - 1} \right)}}} \right] \cr & S = \frac{{\left( {{3^{201}} - 1} \right)}}{2} \cr & S = \frac{{\left[ {{{\left( {{3^3}} \right)}^{67}} - {1^3}} \right]}}{2} \cr & S = \frac{{\left[ {{{27}^{67}} - {1^3}} \right]}}{2} \cr}$$
Since, (Aⁿ - Bⁿ) is divisible by (A - B), So, (27⁶⁷ - 1³) is divisible by (27 -1) = 26
Hence, Expression is also divisible by 13 as it is divisible by 26
Thus given expression is divisible by 13 so the remainder will be 0