Observe rows and columns

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The grid is:

| 86 | 49 | 74 |
| 105 | 75 | 60 |
| 93 | 64 | ? |

Step 1: Observe rows and columns

Try to find relationships either row-wise, column-wise, or diagonally.

First row: 86, 49, 74

Second row: 105, 75, 60

Third row: 93, 64, ?

Step 2: Check differences and sums

Row 1:

86 to 49: difference = 49 – 86 = -37

49 to 74: difference = 74 – 49 = 25

Row 2:

105 to 75: difference = 75 – 105 = -30

75 to 60: difference = 60 – 75 = -15

Row 3:

93 to 64: difference = 64 – 93 = -29

64 to ?: difference unknown

No obvious arithmetic progression there.

Step 3: Check sums of rows and columns

Sum of row 1: 86 + 49 + 74 = 209

Sum of row 2: 105 + 75 + 60 = 240

Sum of row 3: 93 + 64 + ? = 157 + ?

Check columns:

Column 1: 86 + 105 + 93 = 284

Column 2: 49 + 75 + 64 = 188

Column 3: 74 + 60 + ? = 134 + ?

No obvious equal sums or magic square.

Step 4: Look for other patterns

Try checking if each number is related to the difference between adjacent numbers or some other arithmetic function.

Try checking differences diagonally:

86 (top-left) to 75 (middle-center): 75 – 86 = -11

75 (middle-center) to ?: ?

No clear pattern.

Step 5: Check if numbers relate by their digit sums or other transformations

Digit sums:

86 → 8 + 6 = 14

49 → 4 + 9 = 13

74 → 7 + 4 = 11

105 → 1 + 0 + 5 = 6

75 → 7 + 5 = 12

60 → 6 + 0 = 6

93 → 9 + 3 = 12

64 → 6 + 4 = 10

No clear sequence in digit sums either.

Step 6: Try pairing columns

Try subtracting the second column number from the first:

86 – 49 = 37

105 – 75 = 30

93 – 64 = 29

Try subtracting the third column number from the second:

49 – 74 = -25

75 – 60 = 15

64 – ? = ?

No clear consistent difference.

Step 7: Try combining rows with other functions

Look for a possible relationship in each row:

Row 1: 86, 49, 74

Row 2: 105, 75, 60

Row 3: 93, 64, ?

Try:

(First number + Third number) / 2 ≈ Second number?

Check row 1:

(86 + 74) / 2 = 160 / 2 = 80 (Second number is 49, no match)

Row 2:

(105 + 60) / 2 = 165 / 2 = 82.5 (Second number 75, close but no)

Row 3:

(93 + ?) / 2 = 64

So, 93 + ? = 128

? = 128 – 93 = 35

So ? could be 35 by this logic.

Step 8: Verify if 35 fits with other patterns

Try checking column sums again with 35 in place:

Column 3: 74 + 60 + 35 = 169

Any significance?

Try difference in last column:

74 – 60 = 14

60 – 35 = 25

No clear pattern.

Step 9: Check for squares or other mathematical relations

Look for perfect squares in the numbers:

49 = 7²

64 = 8²

Try to see if there’s any relation between numbers and perfect squares:

Could the second column be squares or close to squares?

49 (7²)

75 (close to 64 or 81)

64 (8²)

No clear consistent pattern.

Summary:

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