Multiple choice general knowledge math & puzzles

The fourth power of a positive integer is equal to four times its square. Find that number!

  1. 1

  2. 2

  3. 0

  4. 4
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let the positive integer be x. Then x⁴ = 4x², which simplifies to x²(x² - 4) = 0. Since x is positive, x² = 4 gives x = 2. Option B (2) is correct.

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