There are two kind of tiles 1 x 1 and 2 x 2 we use them to

There are two kind of tiles : 1 x 1 and 2 x 2, we use them to cover the 8 x 3 road without overlapping

How many different ways to arrange tiles here ??

(46, 53 and 65 are no correct anwers)

Solution

1 + 4 + 24 = 29

How many different ways to arrange tiles here ??

29 C 2 = 406

406 different ways