How can you drop a raw egg from a height onto a concrete floor without cracking it?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

Name a key which is hardest to turn.

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 ?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

In the image given, you can find several triangles. Can you count them all?

The below mentioned letters have been placed in a order using a logic.

DEAD, BALL, FEAR, SHOP

Can you find the logic?

It begins where the time ends.
Its second is an expression of surprise.
Its third is a question.
Its fourth is urinate.
It ends with a drink.

Which country it is?

How do you go from 98 to 720 using just one letter?

When we see 2 but call 10?