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Solve the following problems by identifying the pattern. Problem 11: Top Left: 81, Bottom Left: 64, Top Right: ?, Bottom Right: 370. Problem 12: Top Left: ?, Bottom Left: 36, Top Right: 169, Bottom Ri

Mathematics

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Step-by-step solution

20 steps

Here's how to solve these problems by identifying the pattern.

The pattern observed from the examples is:

  1. The top right number is the square of the difference between the top left and bottom left numbers. Top Right=(Top Left−Bottom Left)2\text{Top Right} = (\text{Top Left} - \text{Bottom Left})^2
  2. The bottom right number is the sum of the top right number and the top left number. Bottom Right=Top Right+Top Left\text{Bottom Right} = \text{Top Right} + \text{Top Left}

Let's apply this rule to solve problems 11-20.

11.

  1. Find the top right value using the first rule.

    Top Right=(81−64)2=172=289\text{Top Right} = (81 - 64)^2 = 17^2 = 289
  2. Verify the bottom right value using the second rule.

    Bottom Right=289+81=370\text{Bottom Right} = 289 + 81 = 370

    This matches the given bottom right value.
    The missing value is 289\boxed{289}.

    12.

  3. Let the missing top left value be XX.

    Use the first rule to find XX.

    169=(X−36)2169 = (X - 36)^2 169=X−36\sqrt{169} = X - 36 13=X−3613 = X - 36 X=13+36=49X = 13 + 36 = 49
  4. Verify XX using the second rule.

    218=169+X218 = 169 + X X=218−169=49X = 218 - 169 = 49

    Both rules give the same value for XX.
    The missing value is 49\boxed{49}.

    13.

  5. Find the top right value using the first rule.

    Top Right=(25−16)2=92=81\text{Top Right} = (25 - 16)^2 = 9^2 = 81
  6. Verify the bottom right value using the second rule.

    Bottom Right=81+25=106\text{Bottom Right} = 81 + 25 = 106

    This matches the given bottom right value.
    The missing value is 81\boxed{81}.

    14.

  7. Find the top right value using the first rule.

    Top Right=(9−0)2=92=81\text{Top Right} = (9 - 0)^2 = 9^2 = 81
  8. Find the bottom right value using the second rule.

    Bottom Right=81+9=90\text{Bottom Right} = 81 + 9 = 90

    The missing value is 90\boxed{90}.

    15.

  9. Let the missing top left value be XX.

    Use the first rule to find XX.

    121=(X−25)2121 = (X - 25)^2 121=X−25\sqrt{121} = X - 25 11=X−2511 = X - 25 X=11+25=36X = 11 + 25 = 36
  10. Verify XX using the second rule.

    157=121+X157 = 121 + X X=157−121=36X = 157 - 121 = 36

    Both rules give the same value for XX.
    The missing value is 36\boxed{36}.

    16.

  11. Let the missing bottom left value be YY.

    Use the first rule to find YY.

    121=(36−Y)2121 = (36 - Y)^2 121=36−Y\sqrt{121} = 36 - Y 11=36−Y11 = 36 - Y Y=36−11=25Y = 36 - 11 = 25
  12. Verify the bottom right value using the second rule.

    157=121+36157 = 121 + 36 157=157157 = 157

    This matches the given bottom right value.
    The missing value is 25\boxed{25}.

    17.

  13. Let the missing top left value be XX.

    Use the first rule to find XX.

    361=(X−81)2361 = (X - 81)^2 361=X−81\sqrt{361} = X - 81 19=X−8119 = X - 81 X=19+81=100X = 19 + 81 = 100
  14. Verify XX using the second rule.

    461=361+X461 = 361 + X X=461−361=100X = 461 - 361 = 100

    Both rules give the same value for XX.
    The missing value is 100\boxed{100}.

    18.

  15. Let the missing bottom left value be YY.

    Use the first rule to find YY.

    225=(64−Y)2225 = (64 - Y)^2 225=64−Y\sqrt{225} = 64 - Y 15=64−Y15 = 64 - Y Y=64−15=49Y = 64 - 15 = 49
  16. Verify the bottom right value using the second rule.

    289=225+64289 = 225 + 64 289=289289 = 289

    This matches the given bottom right value.
    The missing value is 49\boxed{49}.

    19.

  17. Find the top right value using the first rule.

    Top Right=(9−9)2=02=0\text{Top Right} = (9 - 9)^2 = 0^2 = 0
  18. Find the bottom right value using the second rule.

    Bottom Right=0+9=9\text{Bottom Right} = 0 + 9 = 9

    The missing value is 9\boxed{9}.

    20.

  19. Find the top right value using the first rule.

    Top Right=(16−4)2=122=144\text{Top Right} = (16 - 4)^2 = 12^2 = 144
  20. Verify the bottom right value using the second rule.

    Bottom Right=144+16=160\text{Bottom Right} = 144 + 16 = 160

    This matches the given bottom right value.
    The missing value is 144\boxed{144}.

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