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90 (numero)

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90
CardinaleNovanta
OrdinaleNovantesimo, -a
Fattori90 = 2 × 32 × 5
Numero romanoXC
Numero binario1011010
Numero esadecimale5A
Valori di funzioni aritmetiche
φ(90) = 24 τ(90) = 12 σ(90) = 224
π(90) = 24 μ(90) = 0 M(90) = -2

Novanta è il numero naturale successivo all'89 e precedente al 91.

Proprietà matematiche

[modifica | modifica wikitesto]
  • Nella smorfia il numero 90 è la paura.
  • 90 sono i numeri del lotto.
  • 90 sono i numeri della tombola.
  • 90 sono i minuti regolamentari della durata di una partita di calcio.

Altri progetti

[modifica | modifica wikitesto]

Collegamenti esterni

[modifica | modifica wikitesto]
  • (EN) Eric W. Weisstein, 90, su MathWorld, Wolfram Research. Modifica su Wikidata
  Portale Matematica: accedi alle voci di Wikipedia che trattano di matematica
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90 (numero)
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