anuppatel012 wrote:
Please do share the shortcut if you have as solution...thanks
It is a step by step process,
First we have to calculate for Unit's digit B
We need a number that is B*B = B
So let us start as follows:
STEP 1a) 0∗0=0 But entire answer will become zero
b) 1∗1=1 but the product will remain as AAB
c) 5∗5=25 but that won't be possible as (5 * A) + 2 = 7 , but we need 5
d) 6∗6=36 and 6∗A+3=5, so this value is Possible when A is 2 or A is 7
no other possible solution, so B is 6 and A is 2 or 7
STEP II The product is AA6∗6=C656
Now if A is 2, it becomes 226∗6=1356 ; but we need C656
so if A is 7
776∗6=4656 which is = CB5B
Hence A+B+C=7+6+4=17
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