I am white when I am dirty, and black when I am clean. What am I?

What number comes next in this sequence:
7 8 5 5 3 4 4 _

You enter your friend's room. He is not in his room. Although you see that on the bed there are two dogs, five cats, two giraffes and three pigs. Also, a couple of chickens and ducks are flying in the room.

Calculate the number of legs standing on the floor.

You can hear me, but you can't touch or see me.

What am I?

What does this rebus riddle means ?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

Can you move 2 matchsticks to form four equal sized squares.

Tell me the Hindi name of a Vegetable which if we remove 1st word will become a precious Stone and by removing the last word it will become a sweet eatable.

In a Society, there are over 100 flats.

Flat 1 is named the first flat.
Flat 2 is named the second flat.
Flat 3 is named the third flat. And So On.....

A visitor decides to walk through all the flats, and he finds all the flats except flat 62.
Anmol later founds that the locals of the town have given it another name.

What is the name of the Flat?

I am lying and I always lie. Tell me whether I am lying or telling the truth.