What is the remainder when 2^20 is divided by 10 ?
Choose the most appropriate option.
A) 0  B) 2  C) 4  D) 6  E) 8
2^20 = 2^10 x 2^10   And 2^10 = 1024   4*4= 
<gadget id="calculator">4*4</gadget>
<output>16</output>
16, so the unit digit of this multiplication is 6   The remainder is 6   ANSWER:6
<result>D</result>
What is the remainder when 2^20 is divided by 10 ?