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

I have eight fingers and two thumbs but I do not live. What Am I?

In a concert, Christina is performing a dance show with her group.
At 10:00, she and her crew were dancing in an absolutely straight line. At that time Christina was standing in 4th position from both the front and back end of the row.

What was the size of her crew?

Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10

Can you find the 09 errors in the picture below?

What has no start, end, or centre?

In particular commonwealth games, a female participant won silver and gold medals for a single event.

How can this be possible?

A Child was born in Lahore, Pakistan. Still, the child is not a Pakistani citizen. why?

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?

Can you count the number of triangles in the given figure?