I’m tall when I’m young, and I’m short when I’m old. What am I?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

Consider this: Arnold Schwarzenegger has a big one. Michael J. Fox has a small one. Prince doesn’t have one. The Pope has one but never uses it. Bill Clinton has one and uses it all the time. What is it?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

What came first, the chicken or the egg?

There are four 3-link chains. All you have to do is join them into a big 12-link chain. For joining two closed links, one of the links must be cut and placed onto the other link for closing.

How many minimum links will you have to cut to make the big chain?

There is a box. The area of its top is 240 square units, the area of the front is 300 square units and the area of the end is 180 square units.

Can you calculate the dimensions of this box with the given data?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

Can you replace the X (both small and big x) with the numbers between 1 to 19 such that all the rows of 3 numbers between X (big x) sum to 23?