I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

How many times can you subtract the number two from the number fifty?

I am a ten letters word
The first four letters have the power to rule,
Next, four-letter can be eaten.
The next three-letter represents a lady.
I can fly as well

what am I looking for?

What has no start, end, or centre?

How can you tell a raw egg from a hard-boiled egg?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

There are two beautiful yet remote islands in the South Pacific. The Islanders born on one island always tell the truth, and the Islanders from the other island always lie.
You are on one of the islands and meet three Islanders. You ask the first which island they are from in the most appropriate Polynesian tongue, and he indicates that the other two Islanders are from the same island. You ask the second Islander the same question, and he also indicates that the other two Islanders are from the same island.
Can you guess what the third Islander will answer to the same question?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

What is the longest word in the dictionary?