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Gmat_mission
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What is the units digit of \(a^{18}?\)
(1) \(a^2\) has a units digit of 9.
(2) \(a^7\) has a units digit of 3.
[spoiler]OA=D[/spoiler]
Source: Veritas Prep
(1) \(a^2\) has a units digit of 9.
(2) \(a^7\) has a units digit of 3.
[spoiler]OA=D[/spoiler]
Source: Veritas Prep