A knot (symbol kn) is (1) a non SI unit of speed used for air and sea travel (2) equal to a distance of one nautical mile travelled per hour (3) equal to 1.1852 km/hour Which of the above statement/statements is/are correct?

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1, 2 and 3

A knot (symbol kn) is (1) a non SI unit of speed used for air and sea travel (2) equal to a distance of one nautical mile travelled per hour (3) equal to 1.1852 km/hour Which of the above statement/statements is/are correct?

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