Question

In the given question, select the related number from the given alternatives.
$42$ $:$ $20$ $:$ $:$ $64$ $:$ $?$

• A. $31$
• B. $32$
• C. $40$
• D. $42$

Answer 1

Answer: (D)

$42$

In the first pair of numbers i.e. $42:20$

$42-22=20$.

So, we need to find the number which follow the same relation as $20$ follows with $42$.

Here, $64-22=42$.

So, $42$ and $20$ differ by $22$ and the same way $64$ and $42$ also differ by $22$.

$\therefore$ The correct answer is $42$. $\left[D\right]$