Fastest Time To Mentally Calculate The Square Roots Of Nine Random Items

India

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Chandigarh, India / December 15, 2013

Sandeep mentally calculated the square roots of nine random items in two minutes, 25.01 seconds.

- must calculate the square roots of nine randomly selected three- to five-digit numbers
- all items must be correctly solved
- must be solved mentally; may not use calculator or other device
- no assistance permitted during the attempt

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Tags: fastestmathnumberscalculationcalculatingsquare root

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