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√1.5625 =?

Correct Answer: 1.25

Explanation:

   1|1.5625( 1.25
    |1
    |-------
  22| 56
    | 44
    |-------
 245| 1225
    | 1225
    |-------
    |    X
    |-------     
∴ √1.5625 = 1.25.

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