GATE Chemical 2017 | Question: 63

Question

The last digit of $\left ( 2171 \right )^{7}+\left ( 2172 \right )^{9}+\left ( 2173 \right )^{11}+\left ( 2174 \right )^{13}$ is

• A. $2$
• B. $4$
• C. $6$
• D. $8$