Through which number we can remove the question mark?











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I'm trying to solve this puzzle but so much confused and can't understand even.Please help me to solve this puzzle and also explain briefly.






calculation-puzzle number-sequence







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    up vote
    2
    down vote

    favorite
    1












    enter image description here



    I'm trying to solve this puzzle but so much confused and can't understand even.Please help me to solve this puzzle and also explain briefly.






    calculation-puzzle number-sequence







    share|improve this question







    New contributor




    Mateen Ahmed is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.






















      up vote
      2
      down vote

      favorite
      1









      up vote
      2
      down vote

      favorite
      1






      1





      enter image description here



      I'm trying to solve this puzzle but so much confused and can't understand even.Please help me to solve this puzzle and also explain briefly.






      calculation-puzzle number-sequence







      share|improve this question







      New contributor




      Mateen Ahmed is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      enter image description here



      I'm trying to solve this puzzle but so much confused and can't understand even.Please help me to solve this puzzle and also explain briefly.






      calculation-puzzle number-sequence




      calculation-puzzle number-sequence






      share|improve this question







      New contributor




      Mateen Ahmed is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      share|improve this question







      New contributor




      Mateen Ahmed is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      share|improve this question




      share|improve this question






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      asked 46 mins ago









      Mateen Ahmed

      1466




      1466




      New contributor




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      New contributor





      Mateen Ahmed is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






      Mateen Ahmed is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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          2 Answers
          2






          active

          oldest

          votes

















          up vote
          6
          down vote



          accepted










          Another way to see it (which also includes the 10 in the rule) is:




          Diagonally (starting in top left corner): 10-13-16-19-22 (+3)

          Diagonally (starting in top right corner): 10-8-6-4-2 (-2)







          share|improve this answer




























            up vote
            5
            down vote













            Simple:




            +5, -10, +15, -20. The answer is $2$.







            share|improve this answer





















            • Your pattern is, actually, the selfsame as stated in @Runemoro's answer (just a bit less complicated). If I could upvote you again to match upvotes, I would. $(+1)$ ;)
              – user477343
              14 mins ago













            Your Answer





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            2 Answers
            2






            active

            oldest

            votes








            2 Answers
            2






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes








            up vote
            6
            down vote



            accepted










            Another way to see it (which also includes the 10 in the rule) is:




            Diagonally (starting in top left corner): 10-13-16-19-22 (+3)

            Diagonally (starting in top right corner): 10-8-6-4-2 (-2)







            share|improve this answer

























              up vote
              6
              down vote



              accepted










              Another way to see it (which also includes the 10 in the rule) is:




              Diagonally (starting in top left corner): 10-13-16-19-22 (+3)

              Diagonally (starting in top right corner): 10-8-6-4-2 (-2)







              share|improve this answer























                up vote
                6
                down vote



                accepted







                up vote
                6
                down vote



                accepted






                Another way to see it (which also includes the 10 in the rule) is:




                Diagonally (starting in top left corner): 10-13-16-19-22 (+3)

                Diagonally (starting in top right corner): 10-8-6-4-2 (-2)







                share|improve this answer












                Another way to see it (which also includes the 10 in the rule) is:




                Diagonally (starting in top left corner): 10-13-16-19-22 (+3)

                Diagonally (starting in top right corner): 10-8-6-4-2 (-2)








                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 37 mins ago









                Runemoro

                712314




                712314






















                    up vote
                    5
                    down vote













                    Simple:




                    +5, -10, +15, -20. The answer is $2$.







                    share|improve this answer





















                    • Your pattern is, actually, the selfsame as stated in @Runemoro's answer (just a bit less complicated). If I could upvote you again to match upvotes, I would. $(+1)$ ;)
                      – user477343
                      14 mins ago

















                    up vote
                    5
                    down vote













                    Simple:




                    +5, -10, +15, -20. The answer is $2$.







                    share|improve this answer





















                    • Your pattern is, actually, the selfsame as stated in @Runemoro's answer (just a bit less complicated). If I could upvote you again to match upvotes, I would. $(+1)$ ;)
                      – user477343
                      14 mins ago















                    up vote
                    5
                    down vote










                    up vote
                    5
                    down vote









                    Simple:




                    +5, -10, +15, -20. The answer is $2$.







                    share|improve this answer












                    Simple:




                    +5, -10, +15, -20. The answer is $2$.








                    share|improve this answer












                    share|improve this answer



                    share|improve this answer










                    answered 43 mins ago









                    JonMark Perry

                    16.6k63279




                    16.6k63279












                    • Your pattern is, actually, the selfsame as stated in @Runemoro's answer (just a bit less complicated). If I could upvote you again to match upvotes, I would. $(+1)$ ;)
                      – user477343
                      14 mins ago




















                    • Your pattern is, actually, the selfsame as stated in @Runemoro's answer (just a bit less complicated). If I could upvote you again to match upvotes, I would. $(+1)$ ;)
                      – user477343
                      14 mins ago


















                    Your pattern is, actually, the selfsame as stated in @Runemoro's answer (just a bit less complicated). If I could upvote you again to match upvotes, I would. $(+1)$ ;)
                    – user477343
                    14 mins ago






                    Your pattern is, actually, the selfsame as stated in @Runemoro's answer (just a bit less complicated). If I could upvote you again to match upvotes, I would. $(+1)$ ;)
                    – user477343
                    14 mins ago












                    Mateen Ahmed is a new contributor. Be nice, and check out our Code of Conduct.










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                    Mateen Ahmed is a new contributor. Be nice, and check out our Code of Conduct.













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                    Mateen Ahmed is a new contributor. Be nice, and check out our Code of Conduct.
















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