Why is it very easy to weigh a fish?

If in a code language, DISTANCE is written as IDTUBECN and DOCUMENT is written as ODDVNTNE, the how will THURSDAY be coded as in the same language?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

A little girl goes to the store and buys one dozen eggs. As she is going home, all but three break. How many eggs are left unbroken?

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

Can you count the number of quadrilaterals in the picture below?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

If we tell you that there is a relation between the numbers and letters in the given figure, can you analyze it and find the missing letter in the last box?

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