alleryStart learning →Why can a 5 x 7 grid never be covered by 2 x 1 tiles?
AIts two sides are unequal
BIt has 35 squares, which is odd
CIt has too many long rows
DIt has twelve squares too few
Answer & Solution
Correct answer: B. It has 35 squares, which is odd
Each tile covers 2 squares, so tiles can only cover an even number of squares, and 35 is odd.
Keep practising Constructions and Tilings
Browse all Constructions and Tilings questions for Olympiad (Class 7), or explore more Mathematics topics.
Related questions
How many equal squares meet at each point when squares tile the plane?A 120 degree angle is built from the 60 degree construction by which step?A 30 degree angle is built from the 60 degree angle of an equilateral triangle. Which stepWhat defines a regular polygon?To show angle XAB equals angle YAB, triangles ABX and ABY are matched by which rule?How many perpendicular bisectors does a given line segment have?A point on the perpendicular bisector of XY is 7 cm from X. How far is it from Y?Most animals have bilateral symmetry. Which plane splits the body into left and right halv