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What's C and G?

Number Theory Level 5

Let \(C\) be the answer to this problem and \(G\) be the answer to this problem.

What is the last digit of \(2^C + 3^C + \ldots + G^C\)?

Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

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Our wiki is made for math and science

Master advanced concepts through explanations,
examples, and problems from the community.

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including olympiad champions, researchers, and professionals.

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by Ivan Koswara

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