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 am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

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

Explain?

Can you identify the hidden rebus in the image below?

Replace the question mark with the number below given a simple math problem.

Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How?

Can you spot the man between the coffee bean in the picture below ?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?