Respuesta :
repetition is allowed so:
There are 26 letters in the alphabet and 10 numbers in 0-9 so
26*26*26*10*10*10
26^3(10^3)=17,576,000
So the answer is C
There are 26 letters in the alphabet and 10 numbers in 0-9 so
26*26*26*10*10*10
26^3(10^3)=17,576,000
So the answer is C