The given number 0.625 is arational numberas it fits the definition of the any number being arational number.As per the question statement, we have to determine whether the given number 0.625 is arationalor anirrationalnumber.Before solving that, we need to know about property of irrationality, Unable to be created by dividing twointegers, a real number (an integer has no fractional part). It is not a rational number since "irrational" means "no ratio."But any number which can be expressed in the form of ratio or fraction is called arationalnumber,0.625 = 625/1000 = p/q, where p, q are integers and q≠0, hence the given number 0.625 is arational numberas it fits the definition of the any number being arational number.Rational Number:Any real number that can be expressed in the form of ratio or fraction or p/q, where p and q are integers and q≠0. The vice versa is for irrational number.To learn more aboutRational Number, click on the link given below:brainly.com/question/24398433#SPJ1...

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