Question

In the following question, there is a specific relationship between the numbers inside the bracket and outside the bracket in each row. Find the relation and select the correct alternative to replace the question mark.
$3\left(45\right)6$
$7\left(70\right)4$
$5(?)8$

• A. $84$
• B. $78$
• C. $94$
• D. $100$

Answer 1

Answer: (D)

$100$

$\frac{45}{18}=2.5$
$\frac{70}{28}=2.5$
$\frac{x}{40}=2.5$
$\therefore x=100$.

Hence, $100$ replaces question mark.