Let a be a non-zero rational number and b be an irrational number. Is ba rational or irrational? Choose 1 answer: (A) Rational (B) Irrational (C) It can be either rational or irrational
Q. Let a be a non-zero rational number and b be an irrational number. Is ba rational or irrational? Choose 1 answer: (A) Rational (B) Irrational (C) It can be either rational or irrational
Identify nature of numbers: Identify the nature of the numbers involved.a is a non-zero rational number, which means it can be expressed as the ratio of two integers, where the denominator is not zero.b is an irrational number, which means it cannot be expressed as the ratio of two integers.
Division of rational by irrational: Consider the division of a rational number by an irrational number.The division of a rational number by an irrational number results in an irrational number. This is because if (a)/(b) were rational, then we could express (a)/(b) as the ratio of two integers, say p/q. Multiplying both sides by b would give a=(p/q)⋅b. Since a and q are both rational, (p/q)⋅b would have to be rational for a to be rational. However, this would imply that b is a factor of a rational number, which would make b rational. This contradicts the fact that b is irrational.
Conclude nature of (a)/(b): Conclude the nature of (a)/(b).Since the division of a non-zero rational number by an irrational number results in an irrational number, (a)/(b) is irrational.
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