What is the riddle which can be asked all day with a different correct answer each time.

What goes up but never comes down?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

In a box, there is a jumble of 7 red balls, 6 blue balls, 5 green balls, and 4 yellow balls. What is the minimum number of balls, will you have to pick up so that you have at least 4 balls of the same colour?

Suppose that you are trapped on the surface of a frozen lake. The surface is so smooth and ideal that there is no friction at all. You cant make any grip on the ice and no wind is blowing to help you out. You have just a mobile phone with you which has got no reception disabling you to call for help.

How will you plan your escape before you freeze to death on the frozen lake?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

My grandson is about as many days as my son in weeks, and my grandson is as many months as I am in years. My grandson, my son and I together are 120 years. Can you tell me my age in years ?

Which wheel of car does not rotate when you turn your car right?

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?