What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

When we see 2 but call 10?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

Andrew sees a very rare bird named "Ruppell's vulture". Soon Andrew was dead. Can you explain the mystery, Mr. Sherlock?

The more of this there is, the less you see. What is it?

Which digit occurred maximum times between the number 1 and 1000?

What is the largest number you can write with just 3 digits?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

Five thieves looted a bank and they ran away in a car. The bank staff informed the police and they began the search of their car in their jeep. They found them on a road and chased them eventually catching them. The light that is used to fill the number plate was broken on the thieves' car. Also, the headlights of the jeep police were not working. How were the police able to catch the thieves then?

I come in different shapes and sizes.
Parts of me are curved, other parts are straight.
You can put me anywhere you like,
but there is only one right place for me.
What am I?