Which of the following is not a binary number?
A. 1111
B. 101
C. 11E
D. 000
Answer:C
Which of the following is not a binary number?
A. 1111 B. 101 C. 11E D. 000
Explanation: A binary number can have only two possible digits, 0 and 1. In the third option, there is an alphabet E present which makes it an invalid binary number. Alphabets are only allowed in hexadecimal number system.