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?

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

What type of tree can I carry in my hand?

Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

What number comes next in this sequence:
7 8 5 5 3 4 4 _

What work can one never finish?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145