What has many keys but can’t open a single lock?

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?

Why do Chinese men eat more rice than Japanese men do ?

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

There is a hypothetical state between the USA and Mexico border 'Tango'.
Here 70 percent of the population have defective eyesight, 75 percent are hard of hearing, 80 percent have Nose trouble and 85 percent suffer from allergies, what percentage (at a minimum) suffer from all four ailments?

You know three triplets: Frank John and Wayne (need to return your money). Frank always tells the truth while John and Wayne always lie. You meet one of them on the road and can ask him a three-word question.
Which question, will you ask?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?