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

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

A dying old man wants to divide his entire land between his only two sons. Since his only wish is to treat them as equal as both of them have been too good to him, he wants to divide his land equally between them. The problem is that the land is significantly irregular in shape and thus there is no choice of cutting them into two equal halves.

Can you help him divide the land in a manner that both of his sons will be happy?

Why do we preferably have round manhole covers and not square ones?

A man was telling some of his war stories to his grandchildren.
"When the World War I was on the verge of end, I was awarded for my bravery for I had saved a group of my men." He coughed and then added, "When we were fighting in northern France, an enemy soldier threw a grenade at us. Before it could explode, I picked it up and threw it away. For my act of bravery, right before the war ended, A General gave me a sword engraved with the words "Awarded for Display of Bravery and Heroism in World War 1"."

Hearing this, one of the grandson spoke up. "Grandpa, this is not a true story. It can"t be true!"

The truth is that it was not. How did the grand children know it?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

Can you find the 09 errors in the picture below?

On the dull night when the blonde was dozing, she heard an odd clamour and she saw that there was a bizarre man with a gun simply outside her home. So she raced to the telephone to call the police, however, she can't dial 911. Why?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?