They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

Who is that with a neck and no head, two arms and no hands? What is it?

John drives to his office at 20km/hr. After reaching the office, he realizes that today is a holiday. He went back at an average speed of 30km/hr. Discounting the time spent in the stoppage what was the average speed of his journey?

Prove that the below maths equation is true.

8 + 8 = 91

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

what's the probability of getting a king or a queen from a pack of 52 cards?

Rumel, A detective who was mere days from cracking an international smuggling ring has suddenly gone missing. While inspecting his last-known location, you find a note:

710 57735 34 5508 51 7718

Currently, there are 3 suspects: Bill, John, and Todd. Can you break the detective's code and find the criminal's name?

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?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?