11. 105, 85, 60, 30, 0, - 45, - 90 ?

1. 1. 0

   
   
   

   2. 85

   
   
   

   3. -45

   
   
   

   4. 60

   
   
   

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1. View Hint View Answer Discuss in Forum

   Subtract 20, 25, 30, 35, 40, 45 from successive numbers. So 0 is wrong.

   Correct Option: A

   Subtract 20, 25, 30, 35, 40, 45 from successive numbers. So 0 is wrong.

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12. 4, 6, 8, 9, 10, 11, 12 ?

1. 1. 10

   
   
   

   2. 11

   
   
   

   3. 12

   
   
   

   4. 9

   
   
   

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1. View Hint View Answer Discuss in Forum

   Each number is a composite number except 11.
   

   Correct Option: B

   Each number is a composite number except 11.
   

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13. 3, 10, 21, 36, 55, 70, 105 ?

1. 1. 105

   
   
   

   2. 70

   
   
   

   3. 36

   
   
   

   4. 55

   
   
   

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1. View Hint View Answer Discuss in Forum

   The pattern is 1 x 3, 2 x 5, 3 x 7, 4 x 9, 5 x 11, 6 x 13, 7 x 15 etc.

   Correct Option: B

   The pattern is 1 x 3, 2 x 5, 3 x 7, 4 x 9, 5 x 11, 6 x 13, 7 x 15 etc.
   So 70 is not correct.

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14. 2, 5, 10, 17, 26, 37, 50, 64 ?

1. 1. 50

   
   
   

   2. 26

   
   
   

   3. 37

   
   
   

   4. 64

   
   
   

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1. View Hint View Answer Discuss in Forum

   The pattern is x² + 1, where x = 1, 2, 3, 4, 5, 6, 7, 8 etc.

   Correct Option: D

   The pattern is x² + 1, where x = 1, 2, 3, 4, 5, 6, 7, 8 etc. But 64 is out of pattern

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15. 8, 27, 125, 343, 1331 ?

1. 1. 1331

   
   
   

   2. 343

   
   
   

   3. 125

   
   
   

   4. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   The number are cubes of primes i.e., 2³, 3³, 5³, 7³, 11³. Clearly, none is wrong.
   

   Correct Option: D

   The number are cubes of primes i.e., 2³, 3³, 5³, 7³, 11³. Clearly, none is wrong.
   

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