I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

What type of tree can I carry in my hand?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

How can one talk without saying a single word?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

There are forty elephants and they have forty-fore heads. How can this be possible?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

A worker is to perform work for you for seven straight days. In return for his work, you will pay him 1/7th of a bar of gold per day. The worker requires a daily payment of 1/7th of the bar of gold. What and where are the fewest number of cuts to the bar of gold that will allow you to pay him 1/7th each day?