Maths Puzzle

Can you find out the remainder when 3^300 is divided by 5?




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What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

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If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?

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Below, you can see some coding:
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February = 628
March = 1335
April = 145
May = 1353
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In 2007, a puzzle was released and $2 million prizes were offered for the first complete solution. The competition ended at noon on 31 December 2010, with no solution being found. Wiki