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

Which is Odd One Out and why?

4377

3954

9862

8454

9831

Prove that twice of ten is the same as twice of eleven.

I travel all around the world but always stay in the corner. What am I?

John was writing his first book. After saving the document, he locked his laptop with a password and mentioned some phrases for the hint box.

A friend of his tried opening his laptop but found out that it was password protected. Following is the hint that appeared.
1 mobile 3 books 2 roars 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches.

Can you help him in cracking the password?

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

I can turn polar bears white.
I can make anyone dance.
I can make everyone cry
I can make your hands clap
I can make you thin.
I can make you smile.
I can make you smile

Can you guess the riddle?

Chhote se Chintu Miyan,
Lambi si Pooch.
Jahan Jaye Chintu Miyan,
Wahan Jaye Pooch.

छोटे से चींटू मियाँ,
लंबी सी पूंछ।
जहाँ जाये चींटू मियाँ,
वहाँ जाये पूंछ।

Bolo kya?

The answer I give is yes, but what I mean is no. What was the question?

what does this picture(rebus) riddle means ?