Related Clues:

• Simple test answer
• Like a single sock
• No bull
• Having no matching sock
• Roulette choice
• Like all prime numbers but 2
• Test answer, at times
• 'How ___ ...'
• Not expected
• Like 69
• Steadfast in loyalty
• Not evenly divisible by two
• Like every other number
• Unlike Miss Manners
• 'You're right'