WHICH OF THE FOLLOWING IS NOT A VALID DESCRIPTION OF THE INPUT ALPHABET SET?
ANSWER IS GIVEN AS {01,110,NULL}
WITH A EXPLAINATION THAT ALPHABET CANNOT CONTAIN NULL .
NOW I HAVE A QUESTIONN REGARDING THAT {0,1,01 } IS NOT ALPHABET WHY ?
AND {01,10} IS ALPHABET WHY ??
PLEASE GIVE REASON ? AS I KNOW FOR {0,1,01} IS WHEN WE WRITE 01 WE CANT DIFFERENTIATE IT IS FROMM 0 AND 1 OR 01?? RIGHT??