Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

I have an eye but still cannot see.

Who am I?

Can you identify if it's a murder or a suicide ?

Prove that twice of ten is the same as twice of eleven.

You can hear me, but you can't touch or see me.

What am I?

Can you solve the photo plexer logic ?

Which is the correct shadow of the bird?

I always drive my customer away.

Who am I?

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?

There was a strange boy who was born before his father. How can this be possible?