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

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

What does the rebus below mean?

TEN BADTION

Here is a Swiss Cross. You have to make two straight cuts in the figure so that it is divided into four congruent pieces. Also, you should be able to join these pieces into a square then. Can you accept this challenge?

If two's company, and three's a crowd, then whats four and five ?

A sundial has the fewest moving parts of any timepiece. Which has the most?

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

What is always in front of you but can’t be seen?

A man looks at a painting in a museum and says, “Brothers and sisters I have none, but that man’s father is my father’s son.” Who is in the painting?