As character names:

U+003F QUESTION MARK character (?)

As raw characters:

?

As a string of HTML entities:

?

Decoder output:

Byte number 1 is decimal 63, hex 0x3F, octal \077, binary 00111111

U+003F	QUESTION MARK
	x (inverted question mark - 00BF)
	x (greek question mark - 037E)
	x (arabic question mark - 061F)
	x (interrobang - 203D)
	x (double question mark - 2047)
	x (black question mark ornament - 2753)
	x (uncertainty sign - 2BD1)
	x (reversed question mark - 2E2E)
	x (medieval question mark - 2E54)
	x (replacement character - FFFD)