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?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

What work can one never finish?

John was so frustrated to be the suspect of being a sleeper terrorist that he shoot himself right between the eyes with a revolver in his toilet. The revolver and the bullets were accurate. Minutes later John walks out of the toilet unharmed.
How can this be possible?

What does below pictogram mean?

I’m tall when I’m young, and I’m short when I’m old. What am I?

what does this picture(rebus) riddle means ?

Today is a very icy and cold morning in Newcastle. Mr Shearer, an office bus driver arrived to pick up the employees from the last stop. Shearer suddenly remembers that he needs to pick a newly joined 4miles to the north. Mr Shearer lost his direction compass, a few minutes later Shearer is able to figure that he is moving in the correct direction i.e. north. How did Shearer know that he is moving in the correct direction?

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?)