Question

In each of the following question, select the related number from the given alternatives.
$2$ $:$ $0$ $:$ $:$ $3$ $:$ $?$

• A. $18$
• B. $19$
• C. $20$
• D. $21$

Answer 1

The correct option is B $19$

The relation between the two numbers is:
$x:(x^3-8)$
For $x=2$
$2:(2^3-8)\Rightarrow 2:(8-8)$ i.e. $2:0$

First number in the second pair is $3$
So, take $x=3$
i.e. $3:(3^3-8)\Rightarrow 3:(27-8)$

We get the second pair as $3:19$.

Hence, option B is correct.