Multiple choice general knowledge math & puzzles A natural number is halved when reduced by thirteen. Find that number! 22 24 26 28 Reveal answer Fill a bubble to check yourself C Correct answer Explanation Let the number be $x$. The equation is $x/2 = x - 13$. Multiplying by 2 gives $x = 2x - 26$. Solving for $x$ yields $x = 26$. This is a natural number, satisfying the condition.