1. A
   None
2. B
   Only one
3. C
   Only two
4. D
   All three

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

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1. A
   $\sin2\theta$
2. B
   $\cos2\theta$
3. C
   $2\sin2\theta$
4. D
   $2\cos2\theta$

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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
   $10$
2. B
   $20$
3. C
   $40$
4. D
   $100$

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1. A
   $0$
2. B
   $1$
3. C
   $2$
4. D
   $6$

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1. A
   $6$
2. B
   $10$
3. C
   $14$
4. D
   $16$

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1. A
   The first term is equal to the common difference
2. B
   The first term is equal to twice the common difference
3. C
   The common difference is equal to twice the first term
4. D
   The first term is equal to square of the common difference

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1. A
   None
2. B
   Only one
3. C
   Only two
4. D
   Three

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1. A
   $60$
2. B
   $55$
3. C
   $40$
4. D
   $35$

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1. A
   $36$
2. B
   $33$
3. C
   $30$
4. D
   $27$

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1. A
   $0°$
2. B
   $30°$
3. C
   $45°$
4. D
   $60°$

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1. A
   $0$
2. B
   $\dfrac{1}{2}$
3. C
   $1$
4. D
   $\dfrac{\sqrt{3}+1}{2}$

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

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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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