One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

What goes through cities and fields, but never moves?

Before Mount Everest was discovered, what was the highest mountain in the world?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

What does this rebus mean?

O
N
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TIME

On the dull night when the blonde was dozing, she heard an odd clamour and she saw that there was a bizarre man with a gun simply outside her home. So she raced to the telephone to call the police, however, she can't dial 911. Why?

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?

You are presented with three boxes. One of them has a red ball inside and the other two have a black ball inside each of them. You are asked to pick up the one with red ball and you pick one. Now, one of the other boxes is opened and it is found to have a black ball.

You are presented with a chance to change your box with the one that is left closed. Will you change your box? Why or why not?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?