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?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

What does this below rebus puzzle mean?

I know there are two methods by using three time the same number with a plus(+) operator , you can make sum as 60.

One of them is 20+20+20.

whats the other way ?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

A girl was sitting in her hotel room when she heard a knock on the door. She opened the door and found that a man was standing outside. The man said, "Oh! I am really sorry, I thought this was my room." He then walked through the corridor to the elevator. The girl did not know the man. She closed her door and called security asking them to apprehend the man. What made her suspicious of that man? He might have been genuinely mistaken.

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

Using eight eights and addition only, can you make 1000?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?