Lol.. Wtf this is the most well known thing in thwle world. Every two number ending with 4 when multiplied also gives 6 as last digit. 14*4 =56
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So much hate in the replies because you posted a simple, elegant palate-cleansing proof. On behalf of those of us who enjoyed this, thank you.
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I also thought it was elegant :)
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So trivial...
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Is that a bad thing?
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One more: Any (X >0), 6^X always ends with 6. And ten's digit is always an odd number too.
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6¹=(0)6 so it's not *always* odd
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This can be easily proved with some number theory I think. But it won't fit in a single tweet ;)
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Care to share it anyways? I'd like to see it.
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Try not to confuse those with validation or endorsement.
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