Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

Using Only Five 5's and any mathematical operator make sum as 37

On a charity event in Russia, Murray beat Djokovic by winning six games and losing three games.
Note: There is a total of 5 service breaks(one who serve lost the game).
Who served first, Djokovic or Murray?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

In particular commonwealth games, a female participant won silver and gold medals for a single event.

How can this be possible?

There was a strange boy who was born before his father. How can this be possible?

What can you deduce from the following BrainBat?

CRY
LMKI

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

Replace the question mark with the correct number.

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?