Answer:
2D from hexadecimal to denary is 13 + 2*16 = 45
68 from hexadecimal to denary, using the same logic as above, is 104.
AB from hexadecimal to denary, using the same logic as above, is 171.
Lastly, F9 from hexadecimal to denary is 249.
31 from denary to hexadecimal is 1F (notice that it is one less than 32, which is 2*16).
73 from denary to hexadecimal is 49.
184 from denary to hexadecimal is B8
Lastly, 255 is FF (notice that it is one less than 256, which is 16*16)
