the ans is wet ones
Ten men were in a boat on the river Ganga. The boat turns over, and all men sink to the bottom of the river, yet not a single man got wet!
WHY?
All are square papers on top of each other. Which square (number) is at the bottom?
There are 10 cups placed on a table such that 3 are face up and 7 are bottom up. A move is defined as inverting a pair (compulsorily) of cups. What is the minimum number of moves required to make all the cups face the same way?
