Dividing the Diamonds
When everybody’s sleeping, two of the best friends get up and decide to distribute the diamonds among themselves and run away. So they start distributing but find that one diamond was extra.
So they decide to wake up 3rd one and divide the diamonds again. Only to their surprise they still find one diamond extra. So they decide to wake up fourth one. Again one diamond is spare. 5th woken up…… still one extra. 6th woken up.... still one extra. Now they wake up 7th and diamonds are distributed equally.
Find the minimum number of diamonds stolen.