Question

In each of the following question, select the related number from the given alternatives.
$20$ $:$ $11$ $:$ $:$ $102$ $:$ $?$

• A. $52$
• B. $49$
• C. $61$
• D. $96$

Answer 1

The correct option is A $52$

In first part $20:11$

$20=2\ast 11-2$

In second part $102:?$

$102=2\ast a-2$

therefore a=52