Rearrange the letters in "new door" to make one word.

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

what's the probability of getting a king or a queen from a pack of 52 cards?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

why number 8549176320 is one of a kind?

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

Can you make the number 24 by utilizing the numbers 1, 3, 4 and 6? You must use one number only one time and you can use mathematical operation symbols anytime anywhere.

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

Below rebus represent famous DiCaprio movie. Can you name it?

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?