If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

How can a man go eight days without sleep?

You have four chains. Each chain has three links in it. Although it is difficult to cut the links, you wish to make a single loop with all 12 links. What is the fewest number of cuts you must make to accomplish this task?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

A man plots the murder of his wife. His plan is full proof. Nobody saw them leaving their house. He stabbed her with a knife while driving. She died on the spot. He threw her body in a valley. He threw the knife carefully wiping his finger prints on a random garbage bin. Then he went back to his home and no one was watching him this time as well.

After an hour, he was called by the local police department who informed him that his wife was murdered. They asked him to reach the scene of crime immediately. But as soon as he arrived at the crime scene, he was arrested by them.

How did the police know that he himself is the murderer?

Only one color, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

Look at the picture and find out which square is not linked with any of the other squares.

using four eights (8) and a one (1) and one mathematical symbol , create the number 100