Question

Question 7
Find the values of the letters in the following and give reasons for the steps involved.
$AB$
$\underset{–}{\times 6}$
$\underset{–}{BBB}$

Answer 1

Here product of B and 6 must be same as ones place digit as B.
$6\times 1=6,6\times 2=12,6\times 3=18,6\times 4=24$
On putting B = 4, we get the ones digit 4 and remaining two B’s value should be 44.
For A=7
$\therefore 6\times 7=42+2=44$ { 2 added is carry }
Hence A = 7 and B =4