The number 11/9 belongs to the Real Numbers and to Rational Numbers.
It can't be expressed as a without decimal places, with this we can rule out Natural, Whole and Integers numbers
The number exists in the real line, thus is a Real Number
And finally, it can be expressed as a ratio (it's fraction, is a ratio by definition) thus is a Rational Number.
Thus the two sets the number belongs are Real and Rational Numbers, R and Q (first option)
