Q: A rectangular area of side 9 and 6 units is to be covered by square tiles of sides 1, 2 and 5 units. The minimum number of tiles needed for this is
(a)13
(b)11
(c)12
(d)15
Correct Answer: (c)
The correct answer is (c): 12. Subject: International Relations | Sub-topic: United Nations Note: This answer was determined through AI-based research. Verify against the official answer key when available.