You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

Only one colour, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

In the picture, you can see a chess board. On the top left position, the K marks a knight. Now, can you move the knight in a manner that after 63 moves, the knight has been placed at all the squares exactly once excluding the starting square?

Count The number of F's in the paragraph below:

"FINISHED FILES ARE THE RESULT OF YEARS OF SCIENTIFIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS"

An equation has been laid down using a few matchsticks. However, as you can see, the equation is not correct. Can you correct the equation if you are allowed to add or remove 5 matchsticks?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

John leaves home and then he takes three right turns. John wants to return to home but he was scared of Jacob, who is wearing a mask.

What is John Situation ?