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Pregunta 6

Why can the test 0.1 + 0.2 === 0.3 evaluate to false in JavaScript?

  1. Some decimal fractions are inexact in binary floating-pointRespuesta correcta
  2. Strict equality rounds both sides to whole numbers
  3. Every JavaScript integer is stored approximately
  4. Addition always converts decimal numbers to strings

Explicación

Number arithmetic uses double-precision binary floating-point, and fractions such as 0.1 may lack an exact binary representation. This does not mean every integer or every decimal operation is inaccurate, so that broader explanation overstates the limitation.

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Pregunta 6: Why can the test 0.1 + 0.2 === 0.3 evaluate to false in… · JavaScript Fundamentals · Questena