Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

Can you find the company name in the pictogram below?

How is a fly different from a mosquito?

Which word does the below Plexor means ?

What is the coolest letter in the alphabet?

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

Take away the whole and some still remain. What is it?

You have a thousand Re. 1 coins with you. You have ten bags with you and you can put any number of coins in each of the bags. The condition is that if someone asks you for any amount between 1 and 1000, you must be able to give that amount by just giving the bag (you are not allowed to open the bag and give coins).

How will you do it?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?