Question

You will get me back if you take me out of twenty-two. Who am I?

• A. 0
• B. 22
• C. 10
• D. 11

Answer 1

The correct option is D 11

Let the number taken from 22 is $x$, and after subtraction it gives back $x$.
Hence, the equation for the given statement :
$22-x=x$

$\begin{array}{ccccc}\text{Value of}x& 0& 11& 10& 22\\ 22-x=x& 22\ne 0& 11=11& 12\ne 10& 0\ne 22\end{array}$

So, the solution to the equation $22-x=x$ is $11$.
Hence, the required number is 11.