Before Mount Everest was discovered, what was the highest mountain in the world?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

What does below Rebus say?

XLR8

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

A man was found murdered on Sunday morning. His wife immediately called the police. The police questioned the wife and staff and got these alibis: The Wife said she was sleeping. The Cook was cooking breakfast. The Gardener was picking vegetables. The Maid was getting the mail. The Butler was cleaning the closet. The police instantly arrested the murderer. Who did it and how did they know?

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

You are driving down the road in your car on a wild, stormy night, when you pass by a bus stop and you see three people waiting for the bus

An old lady looks as if she is about to die.
An old friend who once saved your life.
The perfect partner you have been dreaming about.
Knowing that there can only be one passenger in your car, whom would you choose?