If $n$ is a positive integer, what is the remainder when $3^{4n+2}+1$ is divided by $10?$

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VJesus12: Legendary Member; Posts: 2276; Joined: Sat Oct 14, 2017 6:10 amFollowed by: 3 members

by VJesus12 » Fri Dec 10, 2021 7:54 am

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If $n$ is a positive integer, what is the remainder when $3^{4n+2}+1$ is divided by $10?$

A. 0
B. 1
C. 2
D. 3
E. 4

Answer: A

Source: GMAT Prep

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Source: Beat The GMAT — Problem Solving | Fri Dec 10, 2021 7:54 am

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