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The average of a non-zero number and its square is 5…

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The average of a non-zero number and its square is 5 times the number. The number is-

  1. A. 9
  2. B. 17
  3. C. 29
  4. D. 295

Answer: Option A

Here is complete explanation of The average of a non-zero number and its square is 5….

Solution(By ExamCraze Team)

Let the number be x
Then,
$$eqalign{ & Rightarrow frac{{x + {x^2}}}{2} = 5x cr & Rightarrow {x^2} - 9x = 0 cr & Rightarrow xleft( {x - 9} right) = 0 cr & Rightarrow x = 0{text{ or }}x = 9 cr} $$
So, the number is 9

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