Introduction:
The given statement "Biso ka sir kaat diya na mara na khoon kiya batao kon?" translates to "Who cut off the heads of twenty people, neither killed nor spilled blood?". This question is a riddle that requires logical thinking to find the answer.

Explanation:
To solve this riddle, we need to analyze the given statement and think about the possible scenarios where someone cuts off the heads of twenty people without killing or spilling blood.

Possible Answer:
The answer to this riddle is a common household item, which is a matchstick. Let's break down the explanation:

1. Biso ka sir kaat diya: This line implies that twenty people lost their heads or were beheaded.
2. Na mara: The statement specifies that these people were not killed.
3. Na khoon kiya: It further adds that no blood was spilled during this act.

Explanation of the Answer:
A matchstick is the answer to this riddle because:
1. A matchstick has a head, so the phrase "Biso ka sir kaat diya" could refer to the act of removing the heads of twenty matchsticks.
2. When a matchstick is struck, its head is cut off or removed, but no one dies or gets harmed.
3. Since matchsticks are made of wood, there is no blood involved.

Conclusion:
In conclusion, the answer to the riddle "Biso ka sir kaat diya na mara na khoon kiya batao kon?" is a matchstick. By carefully analyzing the given statement and considering the possibilities, we can deduce that the act of cutting off the heads of twenty matchsticks without killing or spilling blood aligns with the given riddle.

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