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?

Christina is older than Kareena and Karishma. Katrina is older than Karishma and younger than Kareena. If Kareena has a brother named John, who is older than Christina, who's the youngest?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

What four weights can be used to balance from 1 to 30 pounds?

What word is represented by this rebus?

A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?

Can you count the number of quadrilaterals in the picture below?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.