Solve for x:

Question

Solve for x:

Quizplus · Accepted Answer

This is a hexadecimal number, and the only difference between the given options is in the fourth set of digits. We can see that the first two sets and the last set of digits remain the same, so we need to focus on the fourth set. We can convert each digit to binary and compare them: 
18f4 = 0001 1000 1111 0100 
af94 = 1010 1111 1001 0100 
4007 = 0100 0000 0000 0111 
5102 = 0101 0001 0000 0010 
e748 = 1110 0111 0100 1000

We need to find the option that has a different digit in the fourth set, and we can see that only option C has a different digit (7 instead of 4). Therefore, the answer is C.

Solve for X