Question 7
Find the values of the letters in the following and give reasons for the steps involved.
A B
× 6––––––––
B B B––––––––
Here product of B and 6 must be same as ones place digit as B.
6×1=6,6×2=12,6×3=18,6×4=24
On putting B = 4, we get the ones digit 4 and remaining two B’s value should be 44.
For A=7
∴ 6×7=42+2=44 { 2 added is carry }
Hence A = 7 and B =4