What begins with T, ends with T, and has T in it?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

O_er_t_o_

Complete the missing letters of the given word.

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

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?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

I make two people out of one. What am I?

Jenifer and Jesica are having a conversation.

Jenifer: I am definitely not over 30.
Jesica: I am 28 and you are surely 5 years older to me at least.
Jenifer: No, you are at least 29.

You are told that both of them are lying throughout in the conversation. Can you find their respective ages?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?