Find the remainder when $7^{1234}$ is divided by $10?$

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Vincen: Legendary Member; Posts: 2898; Joined: Thu Sep 07, 2017 2:49 pmFollowed by: 5 members; Thanked: 6 times

by Vincen » Sun Jun 14, 2020 4:03 am

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Find the remainder when $7^{1234}$ is divided by $10?$

A. 1
B. 3
C. 4
D. 7
E. 9

[spoiler]OA=E[/spoiler]

Source: e-GMAT

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Source: Beat The GMAT — Problem Solving | Sun Jun 14, 2020 4:03 am

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