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442 Responses to The Mathematical Challenge

  1. Zahi November 14, 2017 at 12:41 PM #

    84

  2. Ibrahim November 13, 2017 at 3:30 PM #

    91

  3. Ibrahim November 13, 2017 at 3:27 PM #

    70

  4. Umer November 12, 2017 at 11:35 AM #

    (((6+7)*8))-(6+7)) = (13*8)-(13) =(104-13) = 91

  5. Mgh November 10, 2017 at 5:00 PM #

    92

  6. ali November 9, 2017 at 11:51 AM #

    56+)7*5( =91

    • ali polat November 9, 2017 at 12:07 PM #

      7*13= 91

    • Adnan Cora November 9, 2017 at 5:18 PM #

      7×8=56
      (6-1) 7=35
      35+56=91

    • farid elsheikh November 9, 2017 at 7:42 PM #

      correct answer 91 …. very good

  7. Sidick November 8, 2017 at 9:27 PM #

    87

  8. Yousef November 8, 2017 at 9:10 PM #

    (3*4)+(2*2-1)= 12+3=15
    (4*5)+(3*3-1)= 20+8=28
    (5*6)+(4*4-1)= 30+15=45
    (6*7)+(5*5-1)= 42+24=66
    (7*8)+(6*6-1)= 56+35=91

    ? = 91

  9. Salah Abu Elhassan November 8, 2017 at 8:21 PM #

    91

  10. Muhammad K. Saleem November 8, 2017 at 6:33 PM #

    91

    • Nidal Elayyan November 8, 2017 at 7:27 PM #

      91 correct

  11. Jamal Mourad November 8, 2017 at 4:05 PM #

    (7*8)+(7*5)=91

  12. usama November 8, 2017 at 2:46 PM #

    91

  13. Shamsul Arefin November 8, 2017 at 2:43 PM #

    91

  14. Yasser November 8, 2017 at 2:28 PM #

    89

  15. Wahid November 8, 2017 at 2:26 PM #

    91

  16. mafbadr November 8, 2017 at 2:24 PM #

    91

  17. gannaf November 8, 2017 at 1:38 PM #

    [(2-1)*3]+12=15
    [(3-1)*4]+20=28
    [(4-1)*5]+30=35



    [(6-1)*7]+56=91

  18. Fakhar November 8, 2017 at 1:04 PM #

    91

  19. Mohamed alli November 8, 2017 at 1:02 PM #

    91

  20. Qaq November 8, 2017 at 12:55 PM #

    72

  21. Sasha November 8, 2017 at 12:35 PM #

    (2+3)*3=15
    (3+4)*4=28
    (4+5)*5=45
    (5+6)*6=66
    (6+7)*7=91
    The answer is 91

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