Sixteen raised to the power zero (16⁰) is equivalent to

1. 0
2. 1
3. 0 and 1
4. None

An octal number system uses the digits from

1. 0 to 8
2. 1 to 8
3. 0 to 7
4. All of them

In a hexa-decimal number system, 'B' represents the digit

1. 11
2. 12
3. 14
4. 13

To express a hexa-decimal number to its binary equivalent, each hexa-decimal digit is expressed as

1. 2 bits form
2. 3 bits form
3. 4 bits form
4. None