Question

Find the values of the letters.

$2AB$

$+\underset{–}{AB1}$
$\underset{–}{B18}$

• A. $B=7$ and $A=4$
• B. $B=2$ and $A=4$
• C. $B=7$ and $A=2$
• D. None of these

Answer 1

The correct option is A $B=7$ and $A=4$

$2AB$
$+\underset{–}{AB1}$
$\underset{–}{B18}$
On studying the addition in the one's column i.e., $B+1$ then we will get $8$.

$B+1$ is $8$ only if $B=7$

Now, $A+B$ gives $1$ or $11$

But as $B=7$, so $A$ should be $4$ to get $11$
So, the given condition is satisfied.
Hence, $B=7$ and $A=4$.