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November 23, 2014

November 23, 2014

Posted by **bethel** on Monday, June 18, 2012 at 4:58pm.

- algebra math -
**MathMate**, Monday, June 18, 2012 at 5:55pm3

^{1}=3

3^{2}=9

3^{3}=27

3^{4}=81

3^{5}=243

...

So we conclude that 3 raised to any power divisible by 4 ends with a 1.

Similarly, 3 raised to any power "divisible by 4 minus one", such as 3, 7, 11, ... ends with a 7.

Can you figure out the answer for 3^59 (noting that 59=4*15-1)?

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