There is book of physics and it's written in it that the gravitational acceleration on the surface of the sun is 274..2 I wanted to know if it's a printing mistake or it's some kind of a notation in physics or maths.
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3Almost surely a printing mistake. – Sean Roberson Dec 17 '19 at 04:56
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5I've never seen that notation in a mathematical text. Perhaps if you gave the title and author (edition, publisher, year, etc.), Readers would be better able to help you. – hardmath Dec 17 '19 at 04:57
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7The gravitational acceleration on the surface of the sun is in fact $274.2\ \mathrm{ms}^{-2}$, so it's just a typo. – Dec 17 '19 at 05:14
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As has been stated in the comments, this is a typo; there is no widely used notation for the decimal representation of numbers that uses two consecutive decimal points.
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