Related Clues:

• Such a relation might be allowed to one at the North
• There's one pest relative to ten more
• Bet they're not even
• One to one, e.g
• __ and ends
• The facial index is one
• 4:1, e.g
• 9 to 5, say
• Betting odds, e.g
• 9 to 5, e.g
• The proportion of numbers the TD exchanges for the radio?
• 10:1, e.g
• There's often a colon in one
• Excluding 4+2 it's 5-1 and 2/1 perhaps
• Ironically, they might be even