Most large number roots calculated in one minute

According to Official Guinness Records,

The most large number roots calculated in one minute is 15 and was achieved by Vikas Sharma (India), in Gurgaon, Haryana, India, on 28 November 2015. The attempt was overseen by a representative from the IMA (International Mental Arithmetic) organisation.

For a complete list of 2015 records, please visit 2015 Guinness Records in India.

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