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1,2,5,7,11,-,17

(5 votes, average: 2.00 out of 5)

December 12, 2014 by Siva Subramanian 10 Comments

Number Puzzle #125
1,2,5,7,11,-,17-Find-missing-number-in-series
find the missing number in below series
1,2,5,7,11,??,17

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It is a prime number series
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Find missing number- 9,19,40,….,170

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Comments

  1. Anna says

    February 13, 2021 at 5:31 am

    Well done 👍

    Reply
  2. rash says

    December 20, 2014 at 12:22 pm

    Answer will b 15 i th8nk

    Reply
  3. suganya says

    December 16, 2014 at 12:31 pm

    12 and 15 answer. because 1 and 2 continue and then 2 numbers hide 3 and 4, so 5 next 1 number hide i.e 6 then 7, next 3 numbers hide 8,9,10 and display 11. From this they hide the number in this series 0213. as per this next number is 12 after 2 number should hide 13, 14 and display 15 and then 1 number hide 16, then display 17. the series is 1, 2, 5, 7, 11, 12, 15, 17….

    Reply
  4. Dhvani says

    December 14, 2014 at 6:44 pm

    or maybe 13

    Reply
  5. Dhvani says

    December 14, 2014 at 6:44 pm

    12

    Reply
  6. anchal says

    December 14, 2014 at 4:18 pm

    Answer is 13 coz this is a prime number series…

    Reply
    • Deepak says

      January 4, 2015 at 8:52 am

      Yp..

      Reply
  7. Abdul Rahim A G says

    December 14, 2014 at 3:38 pm

    12

    Reply
  8. fivebee says

    December 13, 2014 at 9:13 pm

    13

    Reply
  9. Karthik says

    December 12, 2014 at 9:34 pm

    Is the last no 17 only ? Isn’t it 19 ?

    If its 19 then the answer is 14

    Reply

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