Question

In each of the following question, select the related number from the given alternatives.
$1234$ $:$ $4132$ $:$ $:$ $5678$ $:$ $?$

• A. $8765$
• B. $8576$
• C. $8675$
• D. $8567$

Answer 1

The correct option is B $8576$

$\left(\begin{array}{cccc}1& 2& 3& 4\\ 1& 2& 3& 4\end{array}\right)\to \left(\begin{array}{cccc}1& 2& 3& 4\\ 4& 1& 3& 2\end{array}\right)$

To convert $1234\to 4132$, a rearrangement has been done.

$■$ The digit at $4^{th}$ place has been moved to $1^{st}$.

$■$ The digit at $1^{st}$ place has been moved to $2^{nd}$.

$■$ The digit at $2^{nd}$ place has been moved to $4^{th}$.

If we do the same rearrangement to $5678$, we get $8576$.

$\left(\begin{array}{cccc}1& 2& 3& 4\\ 5& 6& 7& 8\end{array}\right)\to \left(\begin{array}{cccc}1& 2& 3& 4\\ 8& 5& 7& 6\end{array}\right)$

$\therefore$ the correct answer is $8576$.