If 4 is the remainder when m is divided by 10, what is the remainder when 4m is divided by 10? Choose one:  A) 2  B) 4  C) 6  D) 8  E) 0
We can put m=10*k+4.   So 4*m=40*k+16 ---&gt; 40*k+16 = 10*(4*m+1) +6 ---&gt; The remainder is 6.   The answer is, therefore, (6).
<result>C</result>
If 4 is the remainder when m is divided by 10, what is the remainder when 4m is divided by 10?