Mathematics, 28.01.2020 04:31 bgcxz
In the c++ programming language, a variable name must start with a letter or the underscore character ( and succeeding characters must be letters, digits, or the underscore character. uppercase and lowercase letters are considered to be diļ¬erent characters.
(a) how many variable names with exactly ļ¬ve characters can be formed in c++? (b) how many are there with at most ļ¬ve characters? (c) how many are there with at most ļ¬ve characters, if they must read exactly the same forwards and backwards? for example, kayak and t55t are admissible, but kayak is not.
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