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?

If you drop a 15 kg iron bar and a 5 kg bag of cotton from a height of 50 meters which will reach the ground first?

Imagine a box with two cogwheels, one big with 24 teeth and one small with 8 teeth. The big one is firmly attached to the center of the box which means it does not turn or move while the small one rotates around the big one.

How many times do you think that the smaller wheel will turn compared to the box when it turns once around the big one?

There is a movie name hidden in the picture that is attached with this question. Can you find out which movie is it?

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?

An equation has been laid down using a few matchsticks. However, as you can see, the equation is not correct. Can you correct the equation if you are allowed to add or remove 5 matchsticks?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?