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

Solve the equation in the image by looking at the pattern closely.

What word begins and ends with an E, but has only one letter?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

There are forty elephants and they have forty-fore heads. How can this be possible?

Detective John was investigating a murder in China.
It was a difficult case, and John was completely stumped until he noticed a message sent to him by the killer cunningly hidden in a newspaper advertisement selling Car Licence Plates.
Detective John thought about it for a while, and when he had solved the puzzle, immediately arrested the guilty man.

Q1) How did John know the advert was a clue for him?

Q2) Solve the code and tell me who John arrested.

This is the newspaper advert (Car licence plates for sale) that Detective John saw.

Plates For Sale;

[W 05 NWO]
[H 13 HSR]
[O 05 EBM]
[D 08 UNE]
[U 10 HTY]
[N 04 BRE]
[N 16 TTE]
[I 26 LHC]
[T 10 AEE]
[I 26 CNA]
[X 22 VDA]

There is a box. The area of its top is 240 square units, the area of the front is 300 square units and the area of the end is 180 square units.

Can you calculate the dimensions of this box with the given data?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

You can hear me, but you can't touch or see me.

What am I?