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What is the least number of identical square tiles needed to pave a rectangular floor 15 m 17 cm long and 9 m 2 cm broad?

Competition practiceNumber & Arithmetic
  • A814
  • B840
  • C902
  • D924

Step-by-Step Solution

In centimetres the floor is . The largest possible tile side is HCF(1517, 902) = 41, because and . Number of tiles = .
Answer: A) 814

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