'Carl Sagan knew that this number is the first to contain a "B" when spelled out'
billion
NUMBER WORD PLAY: Carl Sagan knew that this number is the first to contain a B when spelled out
Carl Sagan knew that this number is the first to contain a "B" when spelled out
Carl Sagan knew that this number is the first to contain a "B" when spelled out
NUMBER WORD PLAY
billion
NUMBER WORD PLAY