Which is the rope you never skip with?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

What has hands, but can’t clap?

There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

Which is faster, Heat or Cold ? Explain.

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?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

Give it food and it will live; give it water and it will die.

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 ?