No. The second integer MUST be non-zero.
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The definition of a rational number is the quotient of any two nonzero integers.
If a number can be expressed as the quotient of two numbers (a ÷ b) and b is not zero, then it is a rational number.
Rational nunber
Mathematics a rational number is any number that can be expressed as the quotient a/b of two integers, with the denominator b not equal to zero. Since b may be equal to 1, every integer is a rational number. The set of all rational numbers is usually denoted Q (for quotient).
Rational numbers are, by definition, expressible that way.