A time long back, there lived a king who ruled the great kingdom of Trojan House. As a part of the renovation of the kingdom to meet future security needs, he asked his chief architect to lay down a new play in a manner that all of his 10 castles are connected through five straight walls and each wall must connect four castles together. He also asked the architect that at least one of his castles should be protected with walls. The architect could not come up with any solution that served all of King's choices, but he suggested the best plan that you can see in the picture below. Can you find a better solution to serve the king's demand?

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?

How many sides does a circle have?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

If eleven plus two equals one, what does nine plus five equal?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

Why is a river so rich ?

What is the end of everything?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?