This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

Can you make four (4) nines (9) equal 100?

Can you count the number of triangles in the picture below?

Why is 6 afraid of 7?

Before reading ahead, you must know the fact that only one of the people here is telling the truth.

A says that B is lying.
B says that C is lying.
C says both A and B are lying.

Can you find out who is speaking the truth?

Your job is to measure 45 minutes if you have only two cords and matches to light the cords.

1. The two cords are twisted from various materials, so their different segments can burn at different rates.
2. Each cord burns from end to end in exactly one hour.

Describe your way of measuring the 45 minutes.

What is the next number in this series?

4,12,84,3612....

I hide my treasure in the ground, my tail is big and fluffy. If you spot me in a tree, please don’t call me scruffy. What am I?

If an electric train is travelling south, then which way is the smoke going?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.