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What is the units digit of 2^2012?

 Apr 22, 2021
 #1
avatar+317 
0

i believe it is 5

 Apr 22, 2021
 #3
avatar+113118 
0

Attn:  itachiuchihakujo

 

Behave yourself or you will be banned from the forum.

Melody  Apr 23, 2021
 #2
avatar+113118 
+1

2,4,8,6,2

So every 5th one ends in 2

so 2^2010 ends in 2

so 2^2012 must end in .. and you can finish it.

 Apr 23, 2021
 #4
avatar+87 
+1

Turns out that the Microsoft scientific calculator is a powerful tool. You can calculate 2^2012, then use mod 10 on it to get the answer of: 

 

nope not going to tell you Try it!

 Apr 23, 2021

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