The host of a game show, offers the guest a choice of three doors. Behind one is a expensive car, but behind the other two are goats.
After you have chosen one door, he reveals one of the other two doors behind which is a goat (he wouldn't reveal a car).

Now he gives you the chance to switch to the other unrevealed door or stay at your initial choice. You will then get what is behind that door.

You cannot hear the goats from behind the doors, or in any way know which door has the prize.

Should you stay, or switch, or doesn't it matter?

Can you find the largest Three-digit number whose sum is 14 and whose square is less than 5,00,000?

What seven-letter word has hundreds of letters in it?

Can you find out which options fits best with the missing column?

Using Only Five 5's and any mathematical operator make sum as 37

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

You have a square. What you have to do is cut and reassemble the square such that you create a Red Cross sign that has the same volume as that of the square.

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

Find the last number in the series below:

voN luJ yaM raM ---

Three brothers Jacob, John, and James live in Mexico City. The product of the ages of these brothers is 175. Jacob and John are twins. How old is James?