If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

I am beautiful, up in the sky. I am magical, yet I cannot fly. To people I bring luck, and to some people, riches. The boy at my end does whatever he wishes. What am I?

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

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

Two men play a dice game involving roll of two standard dice. Man X says that a 12 will be rolled first. Man Y says that two consecutive 7s will be rolled first. The men keep rolling until one of them wins.

What is the probability that X will win ?

What can go through glass without breaking it?

When a clock is observed, the hour hand is at a minute mark and the minutes hand is six minutes ahead of it.

When the clock is observed again after some time, the hour hand is precisely on a different minute mark and the minute hand is seven minutes ahead of it.

Can you calculate how much time has elapsed between the two observations?

A bomb exploded in a room full of married couples and no one died. How?