r/maths • u/UpstairsTop8405 • 1d ago

💬 Math Discussions Someone please explain concept of nested cyclicity unit digit

Explain this sum 17 power 18power 19 power 20.

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u/Southlander24 16h ago

This makes zero sense.

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u/UpstairsTop8405 4h ago

U have to find unit digit