There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

Two guards were on duty outside a barracks. One faced up the road to watch for anyone approaching from the North. The other looked down the road to see if anyone approached from the South. Suddenly one of them said to the other, "Why are you smiling?"

How did he know his companion was smiling?

Sherlock breaks into a crime scene. The victim is the owner who is slumped dead on a chair and have a bullet hole in his head. A gun lies on the floor and a cassette recorder is found on the table. On pressing the play button, Sherlock hears the message 'I have committed sins in my life and now I offer my soul to the great Lord' and followed a gunshot Sherlock smiles and informed the police that's its a murder.

Why did he think so?

All of Jacob's shoes are red except two.
All of Jacob's shoes are green except two.
All of Jacob's shoes are yellow except two.

How many shoes does Jacob have?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

Spot 5 differences in two Christmas tree below:

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?

There is something which you can be arrested for attempting but not for successfully completing.

How many letters are in the alphabet?

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?