If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

I went to the bookshop and spent one-half of the money that was in my purse.

When I came out, I found that I had as many cents as I had dollars and half as many dollars as I had cents when I went in. Find the money in my purse when I entered the store.

What number should come in place of the question mark below?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

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

What am I?

Which Travels Faster? Solve below famous picture riddle:

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

What is harder to catch the faster you run?

In the given picture, you can find two letters missing. When two particular letters are placed in the missing spots, you get an eight-letter word while reading in the anti-clockwise direction. Can you find out the missing letters and the missing word eventually?

I have four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?