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

Find the mistake in the below maths equations

A = 2
A(A-1) = 2(A-1)
A2-A = 2A-2
A2-2A = A-2
A(A-2) = A-2
A = 1

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

What is next number in the pattern below:

131 517 192 123 ?

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

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

Can you spot the man between the coffee bean in the picture below ?

If we tie a Sheep to one peg, a circled grass is been eaten by the Sheep. If we tie the Sheep to two pegs with a circle on its neck, then an eclipse is eaten out of the grass by the Sheep. If we want an eclipse then we put two pegs and then put a rope in between them and the other end of the rope is tied up on the Sheep's neck.

How should we tie the peg and the Sheep so that a square is eaten out from the garden grass? We only have one Sheep rope and the peg and the rings.

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

One night, a woman receives a call from the police. They tell her that her husband was murdered and that she should come to the crime scene as soon as possible. The woman drops the phone, shocked, and drives 20 minutes to the crime scene. As soon as she reaches the crime scene, the police arrest her and she is convicted of murder. How do the police know she committed the crime?