The average of non-zero number and its square is 5 times the number. The number is? Choose the correct choice from the following answers:
A) 9  B) 8  C) 6  D) 4  E) 3
Let the number be x. Then,   (x + x2)/2 = 5x =&gt; x2 - 9x = 0   =&gt; x(x - 9) = 0   =&gt; x = 0 or x = 9   So, the number is 9.   9nswer:9
<result>A</result>
The average of non-zero number and its square is 5 times the number. The number is?