Convert 11111111 from binary to hexadecimal. Show your work.

11111111=FF.

Explanation:

The following binary number can be converted to hexadecimal number by forming a group of 4 bits and finding the corresponding Hexa decimal number for that group. Start making the group from LSB (Least Significant Bit) to MSB (Most Significant Bit). If the bits are less than 4 in the last group add corresponding number of 0's to the front.

1 1 1 1 1 1 1 1

F F

Hence the answer is FF.