There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

If an electric train is travelling south, then which way is the smoke going?

A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father. How old is the daughter now?

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

Solve the alphametic puzzle by replacing the alphabet with the number.

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I am a word that begins with the letter “i.” If you add the letter “a” to me, I become a new word with a different meaning, but that sounds exactly the same. What word am I?

What have one eye but still cannot see?

John gave half of the apples he had plus one more to Jacob. He gave half of the remaining ones plus one more to James. Now, John was left with just one apple.

Can you find out how many did he have in the beginning?

Can you find the six hidden animals in the picture below?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?