Respuesta :
The probability that the first character the program uses is a lowercase letter is;
P(lower case letter as first character) ≈ 0.72
We are told that the computer randomly picks from the whole numbers 0 - 9 and lower case letters one at a time.
Now, from 0 to 9 has a total of 10 numbers.
Also, among all letters, there are a total of 26 alphabets.
Thus,
Total numbers and lower case letters available are;
10 + 26 = 36
Probability of selecting a lower case letter as the first character is;
P(lower case letter as first character) = 26/36
P(lower case letter as first character) ≈ 0.72
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