1. A
   $\dfrac{4n+1}{2}$
2. B
   $\dfrac{2n+1}{2}$
3. C
   $\dfrac{1}{2}$
4. D
   1

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1. A
   $2k^2$
2. B
   $4k^2$
3. C
   $5k^2$
4. D
   $8k^2$

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1. A
   -2
2. B
   -1
3. C
   0
4. D
   2

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1. A
   $\frac{2}{3}$
2. B
   $\frac{1}{2}$
3. C
   $\frac{1}{4}$
4. D
   $\frac{1}{3}$

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1. A
   A only
2. B
   B only
3. C
   Both A and B
4. D
   Neither A nor B

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1. A
   R is reflexive but neither symmetric nor transitive
2. B
   R is reflexive and symmetric but not transitive
3. C
   R is reflexive and transitive but not symmetric
4. D
   R is an equivalence relation

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1. A
   $p=2q$
2. B
   $p=-q$
3. C
   $4p=q$
4. D
   $p=q$

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1. A
   f(x) has some domain and g(x) has no domain
2. B
   f(x) has no domain and g(x) has some domain
3. C
   f(x) and g(x) have the same domain
4. D
   f(x) and g(x) do not have any domain

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1. A
   A and B only
2. B
   B and C only
3. C
   A and C only
4. D
   A, B and C

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1. A
   $-\dfrac{3}{2}$
2. B
   $-\dfrac{1}{2}$
3. C
   $\dfrac{1}{2}$
4. D
   $\dfrac{3}{2}$

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1. A
   $-1$
2. B
   $0$
3. C
   $1$
4. D
   $2$

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1. A
   Limit exists and is equal to 1
2. B
   Limit exists and is equal to 0
3. C
   Limit exists and is equal to -1
4. D
   Limit does not exist

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1. A
   $13$
2. B
   $17$
3. C
   $27$
4. D
   $30$

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1. A
   A only
2. B
   B only
3. C
   Both A and B
4. D
   Neither A nor B

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