Why are all black people so quick ?

Move four matchsticks to the below square to form three squares?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

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

What Time Should the last watch show in the below figure?

John was working on a Chemical Mixture whose weight comprise 90% liquid and 10% solid. The total weight of the mixture is 20 pounds. After a while, John noticed that some of the liquid evaporated and now the liquid comprises just 50% of the weight.

What is the weight of the chemical mixture now?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

If all the below statements are true

1. Gianni was either in Italy or France in 1997.
2. If Gianni did not kill Versace, Hilton must have killed him.
3. If Versace died of suffocation, then either Gianni killed him or Versace committed suicide.
4. If Gianni was in Italy in 1997, then Gianni did not kill Versace.
5. Versace died of suffocation, but he did not kill himself.

Who killed Versace and where was Gianni in 1997?

Our product and our sum always give the same answer. Who are we?