Can you solve the below tricky visual equation?

If 2 workers can complete painting 2 walls in exactly 2 hours.

How many workers would be needed to paint 18 walls in 6 hours?

Replace the question mark with the number below given a simple math problem.

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

Move three sticks of the spiral below to form a square.

I have no life, but I can die. What am I?

The Judge knows that Alamgir was killed by his girlfriend Jasline, but the judge is unsure whether to punish her. Why?

Why is the Hole below a Lock?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

When we see 2 but call 10?