Question

Select the missing number

• A. $184$
• B. $210$
• C. $241$
• D. $425$

Answer 1

The correct option is A $184$

From the first figure,

${11}^2=121$ and $9^2=81$. So, $121-81=40$

Second figure,

${15}^{=}225$ and $7^{=}49$. So, $225-49=176$

Similarly,

${25}^2=625$ and ${21}^2=441$. So, $625-441=184$.

Hence, $184$ replaces question mark.