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?

what does this picture(rebus) riddle means ?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

What is the difference between a jeweller and a jailer?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

Spot 5 differences in two Christmas tree below:

Before reading ahead, you must know the fact that only one of the people here is telling the truth.

A says that B is lying.
B says that C is lying.
C says both A and B are lying.

Can you find out who is speaking the truth?

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

I am quite hot but become too cold if you remove the first two letters. What am I?