The name of a variable in the C programming language is a st

The name of a variable in the C programming language is a string that can contain uppercase letters, lowercase letters, digits, or underscores. Further, the first character much be a letter (either upper or lower case) or an underscore. If the name of a variable is determined only by its first 8 characters (the rest are ignored), how many different variables can be named in C?

Solution

Upper case letters =26

Lowercase letters =26

numbers in one digit = 10

underscore = 1

total possiblities in any possition except first possition = 63

in first possition the total possiblites = 53

the different variables can be named ic C= 53*(63)^7 = 208,765,973,875,851