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?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

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

I know a nine-letter word having only one vowel.
Do you ?

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

One day, John and his friends were playing around. Jacob hit something with a Pin and it popped. John's dad came into the room that very moment, but he wasn't mad. In fact, he was smiling. What did Jacob hit?

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

What has many keys but can’t open a single lock?