A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

Can you make a fire with just a single stick?

Can you name some countries which do not have the alphabet 'A' in them?

Ten coins have been arranged as you can see in the given picture. In this arrangement, a triangle is formed pointing upwards. You have to invert the position of the triangle and make it point downwards while changing the position of 3 coins only. Can you do it?

After teaching his class all about Roman numerals (X = 10, IX=9 and so on) the teacher asked his class to draw a single continuous line and turn IX into 6. The teacher's only stipulation was that the pen could not be lifted from the paper until the line was complete.

What building has the most stories?

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 smallest sentence with all the English alphabet.