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Exponential Problem

Algebra Level 1

$6^{66} + 6^{66} + 6^{66} + 6^{66} + 6^{66} + 6^{66} = \ ?$

6^{66}

6^{78}

6^{67}

7^{66}

6^{76}

7^{67}

6^{65}

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by William Zhu

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