How can a man go eight days without sleep?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

What does this say?

XLR8

12345 a famous South Indian actor
567 is a path in jumbled form
8 & 10 are same letters
9 is one among the first six alphabets.
WHO AM I?

Can you find out which triangle will have a bigger area among the following?
1. A triangle with sides 300, 400 and 500
2. A triangle with sides 300, 400 and 700

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

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?

What always comes into a house through the keyhole?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

The cream is heavier than Milk. True or False?