The answer to the riddle "A man has two, a king has four, and a beggar has none" is the letter 'A'. 
Here's why: 
M: an has two 'A's.
K: ing has two 'A's.
The riddle is actually referring to the spelling of the words, not the people themselves.
The letter 'A' is the solution because: The word "man" has no 'A's, The word "king" has no 'A's, and The word "beggar" has two 'A's.
Therefore, the correct answer is none. 
Wait, re-reading the riddle:
"A man has two, a king has four, and a beggar has none." 
It would be a great riddle to pose at a party or gathering, but the answer isn't the letter 'A'. A man has no 'A', A king has no 'A', and A beggar has two 'A's. 
The riddle is actually a trick of words! The answer is none. The word "none" has no letters.
The answer to the riddle "A man has two, a king has four, and a beggar has none" is the letter 'A'. Here's why: M: an has two 'A's. K: ing has two 'A's. The riddle is actually referring to the spelling of the words, not the people themselves. The letter 'A' is the solution because: The word "man" has no 'A's, The word "king" has no 'A's, and The word "beggar" has two 'A's. Therefore, the correct answer is none. Wait, re-reading the riddle: "A man has two, a king has four, and a beggar has none." It would be a great riddle to pose at a party or gathering, but the answer isn't the letter 'A'. A man has no 'A', A king has no 'A', and A beggar has two 'A's. The riddle is actually a trick of words! The answer is none. The word "none" has no letters.
User: A man has two, a king has four, and a beggar has none - what is it?

Claude: This is a classic riddle! The answer is letters.
• A man has two letters (m-a-n)
• A king has four letters (k-i-n-g)
• A beggar has none... wait, that doesn't work since "beggar" has six letters.
Let me reconsider this. The traditional answer to this riddle is actually legs:
• A man has two legs
• A king has four legs (counting his throne, which historically was often depicted as having four legs)
• A beggar has none (meaning no legs to stand on, metaphorically speaking about having no support or foundation)
Though I should note that the "beggar has none" part is the metaphorical interpretation - literally a beggar would also have two legs like any person.
User: A man has two, a king has four, and a beggar has none - what is it? Claude: This is a classic riddle! The answer is letters. • A man has two letters (m-a-n) • A king has four letters (k-i-n-g) • A beggar has none... wait, that doesn't work since "beggar" has six letters. Let me reconsider this. The traditional answer to this riddle is actually legs: • A man has two legs • A king has four legs (counting his throne, which historically was often depicted as having four legs) • A beggar has none (meaning no legs to stand on, metaphorically speaking about having no support or foundation) Though I should note that the "beggar has none" part is the metaphorical interpretation - literally a beggar would also have two legs like any person.