Keyboard words are not in alphabetical order, Why?

I have Rs.50 and I spend it in the way as below.

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

Where do you go to learn how to make ice cream?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

what's the probability of getting a king or a queen from a pack of 52 cards?

There is a place where if I stand up straight, I will still be considered sideways.

What jumps when it walks and sits when it stands?

A Japanese ship is sailing in the Indian Ocean. The captain of the ship feels tired and decides to take shower to be rejuvenated. He goes to take the shower after keeping his diamond-studded Rolex watch and gold chain on the table.
When he comes back after 15 minutes, he finds them missing. There are 4 crew members on the ship and he calls them one by one to ask them what they were doing in that duration.

Following are the answers:
1. Crew 'A' who is the cook replies that he was cooking mutton for the crew members.
2. Crew 'B' who is a housekeeper tells that he was sleeping in his room.
3. Crew 'C' who is the engineer says that he was checking on the generator.
4. Crew 'D' who is another housekeeper says that he was correcting the hoisted flag that was put upside down.

It took only a couple of seconds for the captain to find the thief. Can you find the thief too?

On a bright sunny day, two fathers took their son fishing in the lake. Each man and son were able to catch one fish. When they returned to their camp, there were only three fishes in the basket. What happened?

PS: None of the fish were eaten, lost, or thrown back.