The units digit of (35)^(87) + (93)^(51) is:	Choose the most appropriate option.
A) 2  B) 4  C) 6  D) 8  E) 0
The units digit of powers of 3, cycles in a group of 4: {3, 9, 7, 1}   51 has the form 4k+3, so the units digit of 93^51 is 7.   The units digit of powers of 5 is always 5.   7+5= 
<gadget id="calculator">7+5</gadget>
<output>12</output>
12, so the units digit is 2.   The answer is 2.
<result>A</result>
The units digit of (35)^(87) + (93)^(51) is: