1.
Which of the following is a rational number?
a) 7r
b) 20
c)0
d) 1 + 3
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a and b are rational numbers
In mathematics, a rational number is a number that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q. Since q may be equal to 1, every integer is a rational number
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