An informational message with a volume of 1.5 Kbytes contains 3072 characters.

An informational message with a volume of 1.5 Kbytes contains 3072 characters. How many characters are contained in the alphabet used to write the message.

I = 1.5 kB = 1.5 * 10 ^ 24 * 8 bits = 12288 bits.

I = K * i, where I is the information volume of the complete message, K is the number of characters in the specified message, and i is the information volume of one character of the text.

i = I / K = 12288 bits / 3072 = 4 bits – falls on 1 character of this text.

N = 2 ^ i = 2 ^ 4 = 16 (characters in this alphabet).

Answer: N = 16.