Which number replaces the question mark in the circle?












8














enter image description here



While solving the number puzzle, I couldn't find any solution for this problem. Please help me solve it and briefly explain your answer. Which number will replace the question mark in the circle below?










share|improve this question





























    8














    enter image description here



    While solving the number puzzle, I couldn't find any solution for this problem. Please help me solve it and briefly explain your answer. Which number will replace the question mark in the circle below?










    share|improve this question



























      8












      8








      8


      1





      enter image description here



      While solving the number puzzle, I couldn't find any solution for this problem. Please help me solve it and briefly explain your answer. Which number will replace the question mark in the circle below?










      share|improve this question















      enter image description here



      While solving the number puzzle, I couldn't find any solution for this problem. Please help me solve it and briefly explain your answer. Which number will replace the question mark in the circle below?







      number-sequence puzzle-creation






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Dec 11 '18 at 15:03









      S. M.

      953419




      953419










      asked Dec 11 '18 at 14:59









      Mateen Ahmed

      3159




      3159






















          2 Answers
          2






          active

          oldest

          votes


















          11















          7




          In the first row,




          The number in the middle circle is the sum of the numbers in the left and right circles in the same positions.




          In the second row,




          The number in the middle circle is the difference between the numbers in the left and right circles in the same positions. It does not matter which is subtracting from which, it is the absolute difference.







          share|improve this answer





















          • Interestingly, if the 5 in the bottom right circle is changed to a 3 then the pattern which has only subtly changed would be more easily stated, because the upper and lower rows would have the same pattern. Of course, this would change the value of the "?"
            – Octopus
            Dec 11 '18 at 23:06










          • @Octopus I'm afraid I don't understand. Even if that were changed, the top row's pattern wouldn't function in the bottom row. Care to expand?
            – kanoo
            Dec 12 '18 at 14:42










          • Diff between circle A and circle B is in circle C ... on both rows, but only if the 5 is changed to a 3.
            – Octopus
            Dec 12 '18 at 17:45



















          7















          If we number the circles as follow:

          First row A B C

          Second row D E F

          On the first row we get for each corresponding sector B(n) = A(n) + C(n)

          namely: 5 = 2 + 3, 7 = 6 + 1, etc.

          On the second row the rule seems to change to alternating D(n) - E(n) = F(n)

          and in the next segment D(n+1) + E(n+1) = F(n+1)

          Starting from top left we get 7 - 1 = 6, 1 + 4 = 5, 8 - 6 = 2, 2 + ? = 9

          Which leads us to ? = 7







          share|improve this answer























          • Your answer was invisible when I answered. I'd like to point out, however, that the answer that I have provided is simpler and the rule for the second row more closely matches the rule for the first row. +1 anyway
            – kanoo
            Dec 11 '18 at 15:26










          • @kanoo Fair enough, I'm not arguing about being first.
            – rhsquared
            Dec 11 '18 at 15:28






          • 1




            Nono, I know you're first, the timestamps prove that lol and I don't spend enough time on this site to care about the points. No ill intent my friend.
            – kanoo
            Dec 11 '18 at 15:30











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          2 Answers
          2






          active

          oldest

          votes








          2 Answers
          2






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          11















          7




          In the first row,




          The number in the middle circle is the sum of the numbers in the left and right circles in the same positions.




          In the second row,




          The number in the middle circle is the difference between the numbers in the left and right circles in the same positions. It does not matter which is subtracting from which, it is the absolute difference.







          share|improve this answer





















          • Interestingly, if the 5 in the bottom right circle is changed to a 3 then the pattern which has only subtly changed would be more easily stated, because the upper and lower rows would have the same pattern. Of course, this would change the value of the "?"
            – Octopus
            Dec 11 '18 at 23:06










          • @Octopus I'm afraid I don't understand. Even if that were changed, the top row's pattern wouldn't function in the bottom row. Care to expand?
            – kanoo
            Dec 12 '18 at 14:42










          • Diff between circle A and circle B is in circle C ... on both rows, but only if the 5 is changed to a 3.
            – Octopus
            Dec 12 '18 at 17:45
















          11















          7




          In the first row,




          The number in the middle circle is the sum of the numbers in the left and right circles in the same positions.




          In the second row,




          The number in the middle circle is the difference between the numbers in the left and right circles in the same positions. It does not matter which is subtracting from which, it is the absolute difference.







          share|improve this answer





















          • Interestingly, if the 5 in the bottom right circle is changed to a 3 then the pattern which has only subtly changed would be more easily stated, because the upper and lower rows would have the same pattern. Of course, this would change the value of the "?"
            – Octopus
            Dec 11 '18 at 23:06










          • @Octopus I'm afraid I don't understand. Even if that were changed, the top row's pattern wouldn't function in the bottom row. Care to expand?
            – kanoo
            Dec 12 '18 at 14:42










          • Diff between circle A and circle B is in circle C ... on both rows, but only if the 5 is changed to a 3.
            – Octopus
            Dec 12 '18 at 17:45














          11












          11








          11







          7




          In the first row,




          The number in the middle circle is the sum of the numbers in the left and right circles in the same positions.




          In the second row,




          The number in the middle circle is the difference between the numbers in the left and right circles in the same positions. It does not matter which is subtracting from which, it is the absolute difference.







          share|improve this answer













          7




          In the first row,




          The number in the middle circle is the sum of the numbers in the left and right circles in the same positions.




          In the second row,




          The number in the middle circle is the difference between the numbers in the left and right circles in the same positions. It does not matter which is subtracting from which, it is the absolute difference.








          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Dec 11 '18 at 15:23









          kanoo

          1,996328




          1,996328












          • Interestingly, if the 5 in the bottom right circle is changed to a 3 then the pattern which has only subtly changed would be more easily stated, because the upper and lower rows would have the same pattern. Of course, this would change the value of the "?"
            – Octopus
            Dec 11 '18 at 23:06










          • @Octopus I'm afraid I don't understand. Even if that were changed, the top row's pattern wouldn't function in the bottom row. Care to expand?
            – kanoo
            Dec 12 '18 at 14:42










          • Diff between circle A and circle B is in circle C ... on both rows, but only if the 5 is changed to a 3.
            – Octopus
            Dec 12 '18 at 17:45


















          • Interestingly, if the 5 in the bottom right circle is changed to a 3 then the pattern which has only subtly changed would be more easily stated, because the upper and lower rows would have the same pattern. Of course, this would change the value of the "?"
            – Octopus
            Dec 11 '18 at 23:06










          • @Octopus I'm afraid I don't understand. Even if that were changed, the top row's pattern wouldn't function in the bottom row. Care to expand?
            – kanoo
            Dec 12 '18 at 14:42










          • Diff between circle A and circle B is in circle C ... on both rows, but only if the 5 is changed to a 3.
            – Octopus
            Dec 12 '18 at 17:45
















          Interestingly, if the 5 in the bottom right circle is changed to a 3 then the pattern which has only subtly changed would be more easily stated, because the upper and lower rows would have the same pattern. Of course, this would change the value of the "?"
          – Octopus
          Dec 11 '18 at 23:06




          Interestingly, if the 5 in the bottom right circle is changed to a 3 then the pattern which has only subtly changed would be more easily stated, because the upper and lower rows would have the same pattern. Of course, this would change the value of the "?"
          – Octopus
          Dec 11 '18 at 23:06












          @Octopus I'm afraid I don't understand. Even if that were changed, the top row's pattern wouldn't function in the bottom row. Care to expand?
          – kanoo
          Dec 12 '18 at 14:42




          @Octopus I'm afraid I don't understand. Even if that were changed, the top row's pattern wouldn't function in the bottom row. Care to expand?
          – kanoo
          Dec 12 '18 at 14:42












          Diff between circle A and circle B is in circle C ... on both rows, but only if the 5 is changed to a 3.
          – Octopus
          Dec 12 '18 at 17:45




          Diff between circle A and circle B is in circle C ... on both rows, but only if the 5 is changed to a 3.
          – Octopus
          Dec 12 '18 at 17:45











          7















          If we number the circles as follow:

          First row A B C

          Second row D E F

          On the first row we get for each corresponding sector B(n) = A(n) + C(n)

          namely: 5 = 2 + 3, 7 = 6 + 1, etc.

          On the second row the rule seems to change to alternating D(n) - E(n) = F(n)

          and in the next segment D(n+1) + E(n+1) = F(n+1)

          Starting from top left we get 7 - 1 = 6, 1 + 4 = 5, 8 - 6 = 2, 2 + ? = 9

          Which leads us to ? = 7







          share|improve this answer























          • Your answer was invisible when I answered. I'd like to point out, however, that the answer that I have provided is simpler and the rule for the second row more closely matches the rule for the first row. +1 anyway
            – kanoo
            Dec 11 '18 at 15:26










          • @kanoo Fair enough, I'm not arguing about being first.
            – rhsquared
            Dec 11 '18 at 15:28






          • 1




            Nono, I know you're first, the timestamps prove that lol and I don't spend enough time on this site to care about the points. No ill intent my friend.
            – kanoo
            Dec 11 '18 at 15:30
















          7















          If we number the circles as follow:

          First row A B C

          Second row D E F

          On the first row we get for each corresponding sector B(n) = A(n) + C(n)

          namely: 5 = 2 + 3, 7 = 6 + 1, etc.

          On the second row the rule seems to change to alternating D(n) - E(n) = F(n)

          and in the next segment D(n+1) + E(n+1) = F(n+1)

          Starting from top left we get 7 - 1 = 6, 1 + 4 = 5, 8 - 6 = 2, 2 + ? = 9

          Which leads us to ? = 7







          share|improve this answer























          • Your answer was invisible when I answered. I'd like to point out, however, that the answer that I have provided is simpler and the rule for the second row more closely matches the rule for the first row. +1 anyway
            – kanoo
            Dec 11 '18 at 15:26










          • @kanoo Fair enough, I'm not arguing about being first.
            – rhsquared
            Dec 11 '18 at 15:28






          • 1




            Nono, I know you're first, the timestamps prove that lol and I don't spend enough time on this site to care about the points. No ill intent my friend.
            – kanoo
            Dec 11 '18 at 15:30














          7












          7








          7







          If we number the circles as follow:

          First row A B C

          Second row D E F

          On the first row we get for each corresponding sector B(n) = A(n) + C(n)

          namely: 5 = 2 + 3, 7 = 6 + 1, etc.

          On the second row the rule seems to change to alternating D(n) - E(n) = F(n)

          and in the next segment D(n+1) + E(n+1) = F(n+1)

          Starting from top left we get 7 - 1 = 6, 1 + 4 = 5, 8 - 6 = 2, 2 + ? = 9

          Which leads us to ? = 7







          share|improve this answer















          If we number the circles as follow:

          First row A B C

          Second row D E F

          On the first row we get for each corresponding sector B(n) = A(n) + C(n)

          namely: 5 = 2 + 3, 7 = 6 + 1, etc.

          On the second row the rule seems to change to alternating D(n) - E(n) = F(n)

          and in the next segment D(n+1) + E(n+1) = F(n+1)

          Starting from top left we get 7 - 1 = 6, 1 + 4 = 5, 8 - 6 = 2, 2 + ? = 9

          Which leads us to ? = 7








          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited Dec 11 '18 at 15:23

























          answered Dec 11 '18 at 15:14









          rhsquared

          7,37521644




          7,37521644












          • Your answer was invisible when I answered. I'd like to point out, however, that the answer that I have provided is simpler and the rule for the second row more closely matches the rule for the first row. +1 anyway
            – kanoo
            Dec 11 '18 at 15:26










          • @kanoo Fair enough, I'm not arguing about being first.
            – rhsquared
            Dec 11 '18 at 15:28






          • 1




            Nono, I know you're first, the timestamps prove that lol and I don't spend enough time on this site to care about the points. No ill intent my friend.
            – kanoo
            Dec 11 '18 at 15:30


















          • Your answer was invisible when I answered. I'd like to point out, however, that the answer that I have provided is simpler and the rule for the second row more closely matches the rule for the first row. +1 anyway
            – kanoo
            Dec 11 '18 at 15:26










          • @kanoo Fair enough, I'm not arguing about being first.
            – rhsquared
            Dec 11 '18 at 15:28






          • 1




            Nono, I know you're first, the timestamps prove that lol and I don't spend enough time on this site to care about the points. No ill intent my friend.
            – kanoo
            Dec 11 '18 at 15:30
















          Your answer was invisible when I answered. I'd like to point out, however, that the answer that I have provided is simpler and the rule for the second row more closely matches the rule for the first row. +1 anyway
          – kanoo
          Dec 11 '18 at 15:26




          Your answer was invisible when I answered. I'd like to point out, however, that the answer that I have provided is simpler and the rule for the second row more closely matches the rule for the first row. +1 anyway
          – kanoo
          Dec 11 '18 at 15:26












          @kanoo Fair enough, I'm not arguing about being first.
          – rhsquared
          Dec 11 '18 at 15:28




          @kanoo Fair enough, I'm not arguing about being first.
          – rhsquared
          Dec 11 '18 at 15:28




          1




          1




          Nono, I know you're first, the timestamps prove that lol and I don't spend enough time on this site to care about the points. No ill intent my friend.
          – kanoo
          Dec 11 '18 at 15:30




          Nono, I know you're first, the timestamps prove that lol and I don't spend enough time on this site to care about the points. No ill intent my friend.
          – kanoo
          Dec 11 '18 at 15:30


















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