Can you find out which number multiplied by itself will give the output as 12345678987654321?

In the city of Brain Teasers, 5% of people do not list their phone numbers. Now if we select random 100 people from the phone directory, then how many people selected will have unlisted phone numbers?

A guy in his thirties is found dead in a forest. The shocking thing about the body is that he is wearing his swimming trunks snorkel and a facemask.

For your information, the nearest lake is some 10 miles away and the sea is hundreds of miles away.

How did he die then?

What seven-letter word has hundreds of letters in it?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

What does this rebus puzzle means ?

A King wants to send the diamond ring to his girlfriend securely. He got multiple locks and their corresponding keys. His girlfriend does not have any keys to these locks and if he sends the key without a lock, the key can be copied in the way. How can King send the ring to his girlfriend securely?

Why are all black people so quick ?

I taste better than I can smell. Who am I?

What runs around the whole yard without moving?