Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

What has 88 keys?

What kind of band never plays music?

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

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?

The dirtier I get, the whiter I look. Who am I?