Why Aeroplane windows are round?

What is the next shape from answers A, B, C, and D figure?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

A California farmer owns a beautiful pear tree. He supplies the fruit to a nearby grocery store. The store owner calls the farmer to see how much fruit is available for him to buy. The farmer knows the main trunk has 24 branches. Each branch has exactly 12 boughs and each bough has exactly 6 twigs. Since each twig bears one piece of fruit, how many plums will the farmer be able to deliver?

What are the 50th, 63rd and 100th numbers in the sequence below?
4, 5, 8, 8, 9, 9, 12, 13, 13, 13, 17, 18, ...

Mr Red Lives in the red house.
Mr Green Lives in the greenhouse.
Mr Yellow Lives in the yellow house.

Who lives in the Whitehouse?

There was a competition where the contestants had to hold something. At the end of the event, the winner was a person who had no hands or feet. What was it that the contestants had to hold?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

What has one eye, but can’t see?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?