What is the least number of square tiles required to pave the floor of a room 15 m 17 cm long and 9m 2 cm broad? Choose the correct choice from the following:
A) 724
B) 804
C) 814
D) 844
E) None
Solution   Length of largest tile = H.C.F. of 1517cm &amp; 902cm = 41cm.   Area of each tile = (41 x 41)cm2   ∴ Required number of tiles	= [1517x902/41x41]   = 814.   Answer 814
<result>C</result>
What is the least number of square tiles required to pave the floor of a room 15 m 17 cm long and 9m 2 cm broad?