Given that p is a positive even integer with a positive units digit, if the units digit of p^3 minus the units digit of p^2 is equal to 0, what is the units digit of p + 4?
Choose the correct choice from the following: A) 7 B) 8 C) 10 D) 11 E) 12
p is a positive even integer with a positive units digit--&gt; the units digit of p can be 2, 4, 6, or 8 --&gt;   In order the units digit of p^3 - p^2 to be 0, the units digit of p^3 and p^2 must be the same. Thus the units digit of p can be 0, 1, 5 or 6.   Intersection of values is 6, thus the units digit of p +4 is  6 + 4= 
<gadget id="calculator"> 6 + 4</gadget>
<output>10</output>
10.   Answer:10.
<result>C</result>
Given that p is a positive even integer with a positive units digit, if the units digit of p^3 minus the units digit of p^2 is equal to 0, what is the units digit of p + 4?