The more of this there is, the less you see. What is it?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

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?

Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

What has one eye, but can’t see?

There’s a girl who has a large family. She has an equal amount of brothers and sisters, but each brother only has half as many brothers and sisters. What’s the correct amount of brothers and sisters?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

A man dies of old age on his 25 birthday. How is this possible?