What is the greatest number that will divide 45 and 81 without leaving a remainder?
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Prime Factor of 45= 3×3×5
Prine factor of 81 = 3×3×3×3
Common prime factor=3×3
Uncommon prime factor=3×3×5
so, required number= 3×3×3×3×5=405
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Answer:
the answer is 9
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