# Need help with math exam question

Question asked by: chrisowen

Asked on: 21 Jan 2011

24 x 54 is 1296. This is a square number because 36 x 36 is 1296, to find out if a number is a square or not just press the square root button on the calculator and see if the result is an integer or not, if so then it is indeed a square number.

That's all there is to it!

By: knowitall

Replied at: 23 Jan 2011

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I put that as the answer, and my math teacher marked it, and said it was wrong, thanks for the try though.

By: chrisowen

By: chrisowen

*Date of comment: Fri, Jan 28th 2011***Ask a New Question**

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Next question: Single copies of a book cost Rs.16 each, but purchasers of 20 or more books pay only Rs.13 per book. What is the value of n<20 for which one could buy 20 books at a lower total cost than one could buy exactly "n" books?

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