logic puzzle

In the 4 x 4 array shown below, each cell of the first three rows has either a cross (X) or a number. 1 X 4 3 X 5 5 4 3 X 6 X The number in a cell represents the count of the immed...

In a room there are only two types of people, namely Type $$1$$ and Type $$2.$$ Type $$1$$ people always tell the truth and Type $$2$$ people always lie. You give a fair coin to a...