What you cannot hold but it is yours?

A convention is held where all the big logicians are summoned. The master places a band on everyone's forehead. Now all of them can see others bands but can't see his own. Then they are told that there are different colours of bands. All the logicians sit in circle and they are further explained that a bell will ring at regular intervals. The moment when a logician knew the colour of band on his forehead, he will leave at the next bell. If anyone leaves at the wrong bell, he will be disqualified.

The master assures the logicians that the puzzle will not be impossible for anyone of them. How will the logicians manage ?

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?

John was running from 40 thieves. John has got 3 gold boxes which weigh as 4kg, 2kg, and 1kg respectively. A witty man asked John to stay with him for seven days in exchange for 1kg gold per day. John needs to stay there for seven days and also do not want to give the witty man any advance. How can John pay for his seven days stay?

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------

Thirty friends were on a hiking trip when they decided to enjoy the bonfire. They assembled for it and agreed to play a game. For that, they divided themselves into five teams with seven members each, forming five rows.

How did they manage to achieve this formation?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

Find out the number of circles in the given picture having Illusion

What is full of holes but still holds water?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?