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?

Move four matchsticks to the below square to form three squares?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

Can you find out who is the kidnapper in below Picture and why, Explain ?

What has no start, end, or centre?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

What time is it when an elephant sits on a fence?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

Find the next number in the series below

21 32 54 87 131 ?

Count the Triangle in the figure given below: