You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

You bought me for dinner but never eat me. What am I?

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]

What you cannot hold but it is yours?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

Find the number of squares in the below-given picture.

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

When 99 is considered higher than 100?

Why do we preferably have round manhole covers and not square ones?

A clock loses 10 minutes each hour. If the clock is set correctly at noon, what time is it when it reads 3 PM?