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Quel est ce nombre ?


Bonjour à tous

Comment faut- il lire 4871x1021


Est-ce que le point signifie x ?


merci ;)

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Oui le point signifie x . 1021 se lit 10 puissance 21 et signifie qu'on multiplie 10 par lui même 21 fois.

Ex 104 = 10000

Donc ton nombre s'écrirait 487100000...00 avec 21 zéros.

C'est un très très grand nombre, d'où l'intérêt de l'écrire avec des puissance de 10.

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Planetary Astronomy
Observing, imaging and studying the planets
A comprehensive book about observing, imaging, and studying planets. It has been written by seven authors, all being skillful amateur observers in their respective domains.
More information on www.planetary-astronomy.com

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