Related Clues:

• Low card in a card deck
• Not quite three
• A low card in a deck of cards
• 31-Across doubled
• Number in a duet
• A third of six
• A fifth of ten
• One tenth of twenty
• One-third of six
• Even prime number
• "It takes ___ to tango"
• Couple's number
• Double 33-Across
• Slam-dunk point count
• One's successor?