.
How many different signals consisting of five symbols or less can be sent 
using the dot and dash of Morse code?
~~~~~~~~~~~~~~~~
The number of different signals using precisely n symbols 
(dot or dash of Morse code) is   ,  n= 1, 2, 4, . . . 
Therefore, the answer to the problem's question is
    N(signals) =
,  n= 1, 2, 4, . . . 
Therefore, the answer to the problem's question is
    N(signals) =  +
 +  +
 +  +
 +  +
 +  = 2 + 4 + 8 + 16 + 32 = 62.    ANSWER
 = 2 + 4 + 8 + 16 + 32 = 62.    ANSWER
Solved.