When we see 2 but call 10?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

What do you call a fish without an eye?

A deaf and mute man goes to the train station. Tickets for the train are 50 cents each. The man goes to the ticket booth and hands the man inside just a dollar. The man in the booth hands him two tickets.

How did the man in the booth know to give him two tickets without even looking at him?

Once upon a time, there was a castle on a square island. The entire island was surrounded by a 14m wide trench. The Romans had wanted to invade the castle and had brought a few wooden planks along with them to facilitate themselves in crossing the moat. The planks were however found to be only 13m long.

The Romans still managed to cross the trench. How did they do it?

When monkey rotate the gear, which mark will be hit 1 or 2 ?

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

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

It belongs to you, but other people use it more than you do. What is it?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?