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Find Last Digit

Number Theory Level 2

\[\LARGE 9^{8^{7^{6^{5^{4^{3^{2}}}}}}}\]

Find the last digit of the number above.

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Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

Used and loved by over 6 million people

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including olympiad champions, researchers, and professionals.

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by Mohd Aasif

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