Cant understand the problem statement


#1

Can anyone explain it in detail thanks !


#2

Think of it like a conversion from binary to decimal number system, only this time instead of 2 digits (0, 1) you’ve got 26 (A - Z)


#3

understood with you’re explanation , thank you.


#4

You can refer this:


#5

How did You came to know this?
By seeing the given example?