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?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

How many Watermelons are there in the below picture?

French Police inspects a room where there are no windows, no doors, no tables and is almost empty expect there is just a puddle of water. They found a dead man who obviously hung herself from the ceiling, but they are not able to figure out how this had happened.

John and Jacob entered the crime scene and easily able to solve the case.

How did the man die?

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?

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

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

How can this be possible?

Jigsaw captured 100 people and make them stand in a circle and all these people are labelled as Person1, Person2, Person3... Person100. He made them play a crazy game in which Person 1 shot Person 2 and pass the gun to the next person and so on until one stands alive.

Which person will survive in the end?

There was a minor accident with a doctor's son but the doctor noticed no major injury. After the treatment, the father of that doctors son is sitting with the son of the doctor without the doctor being in the room.

How can this be possible?