Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

Replace the question mark in the picture below.

How could a baby fall out of a twenty-story building onto the ground and live?

Why do you find that most of the buildings are deprived of the 13th floor?

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *

How many words can a pen with half refill write?

A crime was committed at baker street. Ibrahim Dakota who was shot in the stomach was the main suspect. Sherlock questioned the suspect. The conversation started as:
Sherlock: What's your story, Ibrahim?
Ibrahim: I was walking around baker street and suddenly a man from the back shot me. I ran as fast as I could to save my life".
Sherlock: That is enough (and ask the police to arrest him).

Why does Sherlock think he is the murderer?

Solve the rebus riddle in the picture below.

What is the largest number you can write with just 3 digits?