Find the ones digit of 73^353	Choose the correct choice from the following.
A) 3 B) 5 C) 6 D) 7 E) 9
The units digit of 73^353 will be the same as the units digit of 3^353.   3^1=3 --&gt; the units digit is 3;   3^2=9 --&gt; the units digit is 9;   3^3=27 --&gt; the units digit is 7;   3^4=81 --&gt; the units digit is 1;   3^5=243 --&gt; the units digit is 3 AGAIN;   ...   So, as you can see the units digit repeats in blocks of 4: {3, 9, 7, 1}, {3, 9, 7, 1}, ... Now, since 353=352+1=(multiple of 4)+1, then the units digit of 3^353 will be the first number in the pattern thus 3.   3nswer:3.
<result>A</result>
Find the ones digit of 73^353