What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

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?

What does the below image rebus riddle means ?

What has one eye, but can’t see?

A king sentenced a man to the death sentence for some crime he had committed. Known for his kindness, the king told the culprit that he had a choice to die in a way he decides.

The culprit was clever and said something that saved him from death. What method do you think he must have chosen for his death?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

What is the riddle which can be asked all day with a different correct answer each time.

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?

It is always ahead of me yet I can never see it. What is it?

You are provided with a grid (as shown in the picture). Can you fill the squares with numbers 1-8 in a manner that none of the two consecutive numbers are placed next to each other in any direction (vertically, horizontally or diagonally?)