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Which number should be replaced with x in following series :

2, 3, 5, 7, 11, x, 17

  • 12
  • 13
  • 14
  • 15
Similar Questions :

1. 6, 11, 21, 36, 56, ?
what will replace the question mark in the series ?

  • 75
  • 81
  • 85
  • 89

2. 20, 19, 17, (...) , 10, 5

  • 16
  • 12
  • 15
  • 14

3. 5, 9, 17, 29, 45, ... ?

  • 58
  • 64
  • 65
  • 80

4. What number should come next in the series, 1, 2, 3, 5, 8, ?

  • 17
  • 12
  • 9
  • 13

5. 1, 2, 5, 12, 27, 58, 121, ?

  • 248
  • 244
  • 198
  • 190
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