GATE | CS | 2018 | Discrete Maths | Set Theory | Question 58

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Let N be the set of natural numbers. Consider the following sets, P: Set of Rational numbers (positive and negative) Q: Set of functions from {0, 1} to N R: Set of functions from N to {0, 1} S: Set of finite subsets of N Which of the above sets are countable?

Q and S only

P and S only

P and R only

P, Q and S only

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