Advanced MathEasyNumber whose square is four times itself
Advanced Math practice question
The square of a positive number is 4 times the number. What is the number?
Answer: 4
n² = 4n and n > 0 give n = 4.
Common wrong answers
- If you answered 0
- 0 satisfies n² = 4n but is not positive.
- If you answered 2
- 2 gives 4 = 8, which is false.
- If you answered 16
- 16 is 4², not the number.
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