The square root of 636 is between which set of integers?

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问题 The square root of 636 is between which set of integers?

选项 A、24 and 25
B、25 and 26
C、26 and 27
D、27 and 28
E、28 and 29

答案B

解析 The best solution here is to plug in the numbers from the answers until you find one that works. 24×24=576, 25×25=625, 26×26=676... therefore, the square root of 636 is between 25 and 26.
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