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

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

Can you complete the sequence puzzle?

AR TA GE CA LE VI LI _

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?

What does the below rebus riddle means?

There are five people. One of them shot and killed one of the other five.
We know following clues:
1. Dan ran in the NY City Marathon yesterday with one of the innocent men.
2. Mike consider being a farmer before he moved to the city.
3. Jeff is a top notch computer consultant and wants to install Ben new computer next week.
4. The murderer had his leg amputated last month.
5. Ben met Jack for the first time six months ago.
6. Jack has been in seclusion since the crime.
7. Dan used to drink heavily.
8. Ben and Jeff built their last computers together.
9. The murderer is Jack's brother. They grew up together in Seattle.

Consider yourself to be a famous detective "Sherlock Homles", Can you find the killer?

What is the word or phrase?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?