On rolling two dices (six-sided normal dice) together, what is the probability that the first one comes up with a 2 and the second one comes up with a 5?

Can you complete the sequence?

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

Identify the 10 differences between the two given pictures.

I am a five-letter word and people eat me. If you remove the first letter I become an energy form. If you remove the first two letters, I am needed to live. Scramble the last three letters and I am a drink. What word am I?

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

What is always in front of you but can’t be seen?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

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?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?