Question

$\ast 025$ will form a square of $95$. Which digit should replace $\ast$?

• A. $9$
• B. $8$
• C. $7$
• D. $6$

Answer 1

The correct option is A $9$

Multiply ten's digit with its next number.
$9\times (9+1)=9\times 10=90---\left(1\right)$
Find the square of unit's digit: 5
$5^2=25$ ----(2)
Combining (1) and (2), we get
$9025=95\times 95$
So, $9$ is the missing number.