15 caves are arranged in a circle at the temple of doom. One of these caves has the treasure of gems and wealth. Each day the treasure keepers can move the treasure to an adjacent cave or can keep it in the same cave. Every day two treasure seekers visit the place and have enough time to enter any two caves of their choice.

How do the treasure seekers ensure that they find the treasure in the minimum number of possible days?

I cannot talk, but I always reply when spoken to. What am I?

An equation has been laid down using a few matchsticks. However, as you can see, the equation is not correct. Can you correct the equation if you are allowed to add or remove 5 matchsticks?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

Solve the puzzle by telling what does below picture means.

During which month do people sleep the least?

Identify the hidden meaning behind this picture?

I am white when I am dirty, and black when I am clean. What am I?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

What has lots of eyes, but can’t see?