The ratio between two numbers is 8 : 5 and their LCM is 360. The larger number is _______.
(A) 24                  (B) 72                     (C) 48                  (D) 36                  (E) None of these

The product of two numbers is 324. Their HCF can be __________.
(A) 54                  (B) 9                      (C) 4                    (D) 27                    (E) None of these

A rectangular caurtyard with length 10 m 50 cm and breadth 4 m 20 cm is to be paved with square stones of the same size. The least number of such stones required are ________.
(A) 20                 (B) 10                    (C) 8                     (D) 6                     (E) None of these

The least common multiple of four numbers is 720. If three numbers 16, 10 and 40 then fourth number can be ___________.
 (A) 75                (B) 144                 (C) 80                   (D) 54                    (E) None of these