If n is an integer and n^4 is divisible by 9, which of the following could be the remainder when n is divided by 9?  Pick one:  A) 1  B) 3  C) 5  D) 6  E) 8
option 1   Remainder 1 means  9+1= 
<gadget id="calculator"> 9+1</gadget>
<output>10</output>
10   n^4= 10^4= 10*10*10*10/9 is not an integer   option 2   Remainder 3 means  9+3= 
<gadget id="calculator"> 9+3</gadget>
<output>12</output>
12   n^4= 12*12*12*12/9 is an integer means n^4 is divisible by 9 if we take n=3   so 3 is correct
<result>B</result>
If n is an integer and n^4 is divisible by 9, which of the following could be the remainder when n is divided by 9?