Question

Question 59

Find the value of the letters in the following question:

$AB-B7\_\_\_\_\_\_\_\_45$

Answer 1

Given, $AB-B7\_\_\_\_\_\_\_\_45$
In the ones column,
B - 7 = 5
Clearly, 12 - 7 = 5 so B = 2
Now, in ten's column, we have
A - (B + 1) = 4
$\Rightarrow$ A - B = 5
$\Rightarrow$ A - 2 = 5
$\Rightarrow$ A = 7
Hence, A = 7 and B = 2