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28-04-2017
Mathematics

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The product of two consecutive room numbers is 342. Find the room numbers.

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28-04-2017

To determine this easily, figure out what two numbers will make a product ending with "2", (4 & 3, 8 & 9)
Since the square root of 625 is 25, it is obviously less than 25.
I used 18 and 19, and they are the correct answer.

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