John was visiting his friend Jacob. He found out that his friend's wife had just killed a burglar in self-defense.
John asks Jacob about what happened and he told that "His wife was watching television when suddenly the bell rang. She thought that it is her husband Jacob but she found the burglar who attacked her instantly and she got so frightened that she killed the burglar immediately with the knife.
John asked the police to arrest his friend's wife. Why?

Sherlock Holmes was challenged to make a pre-drawn line smaller without erasing it. He did it in fractions of seconds. How?

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

Can you find out who is the kidnapper in below Picture and why, Explain ?

What can you catch but never throw?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

Take away the whole and some still remain. What is it?

Can you solve below mathematical equation?

2^1234 - 2^1233

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

I’m tall when I’m young, and I’m short when I’m old. What am I?