A river should be crossed by a father, a mother and their two sons and two daughters.
There are some rules that should be followed while crossing the river. There can be only two people in the raft while crossing. The daughters cannot be with their father unless there is the presence of the mother. The sons cannot be with their mothers unless the father is present. Unless the guard is on the board, the criminals cannot be with any of the family members. Only the adults like the father, the guard, and the mother knows to use the raft.

How will they cross the river?

How far can you walk into the woods?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

Can you move 2 matchsticks to form four equal sized squares.

During an experiment, a guy throws a bouncy ball from a 100 feet tall building. The ball has a specific characteristic. Every time it hits the ground, it bounces up halfway.

How many bounces do you think the ball will make before it comes to a stop ?

This is a picture puzzle. You have to guess the name of the movie that can be related to the picture.

What has many keys but can’t open a single lock?

Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How?

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i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?

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How will you decide which one of those is magnet?