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

What am I?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

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

Complete the table series riddle by finding the number that can replace "??".

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

Usually, a boxing match consists of twelve rounds. In a particular friendly match between two heavyweights, the match was finished in the ninth round itself as one of the boxers knocked out the other one.

But, in that fight, no man threw even a single punch.

How can this be possible?

There was a minor accident with a doctor's son but the doctor noticed no major injury. After the treatment, the father of that doctors son is sitting with the son of the doctor without the doctor being in the room.

How can this be possible?

I’m tall when I’m young, and I’m short when I’m old. What am I?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100