The average of non zero number and its square is 5 times the number. The number is?	Options:
A) 5  B) 7  C) 9  D) 10  E) 12
Let the number be x   (x+x^2)/2 = 5x   x^2 - 9x = 0   x(x-9) = 0   x = 0 or x = 9   So the number is 9   Answer is 9
<result>C</result>
The average of non zero number and its square is 5 times the number. The number is?