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

When it is alive we sing, when it is dead we clap our hands. What is it?

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

What's the only room from which no one can enter or leave

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

Who is He ?

John is a strange liar.

He lies on six days of the week, but on the seventh day, he always tells the truth.

He made the following statements on three successive days:

Day 1: "I lie on Monday and Tuesday."
Day 2: "Today, it"s Thursday, Saturday, or Sunday."
Day 3: "I lie on Wednesday and Friday."

On which day does John tell the truth?

What does below rebus means ?

What number should come in place of the question mark below?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?