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Which number produces a rational number when multiplied by 0.5?

Which number produces a rational number when multiplied by 0.5?-example-1

2 Answers

2 votes
C.

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User Nebil
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7 votes

The right answer is c. 2.22


A rational number is a number that can be expressed as the quotient of two integers, that is, the mathematical equation that model this statement is:



(p)/(q)


where p and q are integers and q is non-zero. In the choices above, only 2.22 accomplishes with this condition because:



2.22=(111)/(100)


Therefore:


2.22 * 0.5=(111)/(50) * 0.5 = \boxed{1.11=(111)/(100)}


In conclusion, 1.11 is also a rational number

User Dirk Herrmann
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