Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

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

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

Find the value of "a" by solving the maths equation in the picture below:

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

The ultimate seek-and-find challenge! Can you unearth the hidden boot amongst the sheep in our shearing salon? Put your skills to the test!

I have two sand hourglasses:
1. A 7 minute one and
2. An 11-minute one.

Using just these 2 sand hourglasses, how can I measure time as 15 minutes?

A father is locked up in jail. His wife has gone bankrupt. Their male child has to sell his hotel in order to gain some money. Yet their girl child does not care and is quite happy.

How can someone be so rude?

If two's company, and three's a crowd, then whats four and five ?