In fig 4x4 Square is filled by a tetromino shape111.PNG. In the same way try to fill other 4x4 square grids using the other four tetrominoes m1q.PNGm2q.PNGm3q.PNGm4q.PNG.find which tetromino shape cannot fill the 4x4 square grid completely.

    
ma1q.PNG
ma2q.PNG
ma3q.PNG
ma4q.PNG
ma1.PNG
ma2.PNG
ma3.PNG
ma4.PNGma5.PNG
tetromino shape canot fill the 4 x 4 square completely