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Question 1) Write ⊆ or ⊄:

{x/(x+1) : x∈N} ________ Q

NOTE:

⊆ means SUBSET

⊄ means NOT A SUBSET

∈ means ELEMENT

N means Natural Numbers

Q means Rational Numbers

Question 2)

Which of the following sets are infinite and uncountable?

R - Q

{n∈N: gcd(n,15) = 3}

(-2,2)

N*N

{1,2,9,16,...} i.e the set of perfect squares

{x/(x+1) : x∈N} ________ Q

NOTE:

⊆ means SUBSET

⊄ means NOT A SUBSET

∈ means ELEMENT

N means Natural Numbers

Q means Rational Numbers

Question 2)

Which of the following sets are infinite and uncountable?

R - Q

{n∈N: gcd(n,15) = 3}

(-2,2)

N*N

{1,2,9,16,...} i.e the set of perfect squares

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