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?

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

What do you answer even though it never asks you questions?

What goes up but never comes down?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

Can you decipher the below rebus?

PBLUESAISNUERSES

One absent-minded ancient philosopher forgot to wind up his only clock in the house. He had no radio, TV, telephone, internet, or any other means for telling time. So he travelled on foot to his friend's place a few miles down the straight desert road. He stayed at his friend's house for the night and when he came back home, he knew how to set his clock. How did he know?

Spot what is wrong here in below Picture?

What does this rebus puzzle means ?

Solve the equation in the image by looking at the pattern closely.