Question

2	3	25
3	5	64
4	?	144

Find the number which will replace the $?$.

• A. $6$
• B. $7$
• C. $8$
• D. $9$

Answer 1

The correct option is C $8$

Here, the number in each of the third column is equal to the square of sum of the corresponding numbers in 1st and 2nd column.
Let the missing number be x.
${(4+x)}^2=144⟹4+x=12⟹x=8$
Hence, option (C) is the correct answer.