Question

Question 5
Find the values of the letters in the following and give reasons for the steps involved.
$AB$
$\underset{–}{\times 3}$
$\underset{–}{CAB}$

Answer 1

Here unit digit of number obtained by multiplying B with 3 is B
which is possible only when B=0
Here on putting B = 0, we get $0\times 3=0.$
And A = 5, then $5\times 3=15$
$\Rightarrow$ A = 5 and C = 1
Hence, A = 5, B = 0 and C = 1