Each item in a supermarket is coded with either a 5-letter code or a 4-letter code from the 26 alphabets. What is the maximum number of items in the supermarket that can be coded with these numbers?
Assuming repetition is allowed
Using 5 letter code, we have 26*26*26*26*26 = 26^5
Using 4 letter code, we have 26^4
Total number of products coded = 26^4(27)
