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?

If an earthquake is 1 point higher on the Richter Scale than another earthquake which is actually 10 times stronger, how much stronger would an earthquake be if it was just half a point higher on the Richter scale?

A father's child, a mother's child, yet no one's son.

Who am I?

What's the best place to go shopping in the ocean?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

The following four words might seem abrupt to you. But you can make them meaningful by just adding vowels.
RDSH
GGPLNT
TMT
NN

Hint: All of them are vegetables.

What always comes into a house through the keyhole?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

2, 3, 5, 9, 17, _ What is the next number in the sequence?