ShmoopTube

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And here's your shmoop du jour...

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The square of a whole number is between 900 and 1600.

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The root being squared must be between... which two whole numbers?

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Here are the potential answers...

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Before we spoil the ending and kill all the drama... why not hit pause and try to solve it yourself?

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So... this is really testing our ability to recognize perfect squares.

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It should be pretty obvious with all the double zeroes in here,

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we may very well have a couple of them in our hands.

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900 is 30 squared and 1600 is 40 squared.

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But if you DIDN'T recognize them, we could have brute-forced the answer by just

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taking each answer choice one by one until we find one that works.

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9 squared is 81, which is below 900

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Answer B gets us to the promised land.

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If we were to keep going and square the 90 listed in choice C, we are already well above the minimum.

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And since D is even higher, it's an easy reject.

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Done. Answer B it is.

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