Question 10
A beaver has 16 fir trees of four heights, four of each height. Trees of the same type have the same height, and different types have different heights. The four types, from shortest to tallest, are shown here.
Plant them in a 4×4 garden so every row and column contains each type exactly once. A sign around the garden records how many trees are visible along that row or column: a taller tree hides shorter trees behind it. The example illustrates the rule.
Here are the signs for a new garden.
Which option gives the trees at A,B,C,D, in that order?
Plant them in a 4×4 garden so every row and column contains each type exactly once. A sign around the garden records how many trees are visible along that row or column: a taller tree hides shorter trees behind it. The example illustrates the rule.
Here are the signs for a new garden.
Which option gives the trees at A,B,C,D, in that order?
