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younglife's Question
Math
Posted 9 months ago

3. Replace the question mark in the above problem with the appropriate number.
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Answer from Sia
Posted 9 months ago
Solution by Steps
step 1
Identify the pattern in the given grid of circles. The circles are arranged in a 3x3 grid with numbers 9, 1, 5 in the top row, 4, 8, 3 in the middle row, and 2, ?, 7 in the bottom row
step 2
Observe the relationship between the numbers in the circles. Notice that the sum of the numbers in each row and column should be consistent
step 3
Calculate the sum of the numbers in the top row: 9+1+5=159 + 1 + 5 = 15
step 4
Calculate the sum of the numbers in the middle row: 4+8+3=154 + 8 + 3 = 15
step 5
Calculate the sum of the numbers in the bottom row: 2+?+72 + ? + 7. To maintain consistency, the sum should also be 15
step 6
Set up the equation for the bottom row: 2+?+7=152 + ? + 7 = 15
step 7
Solve for the question mark: 2+?+7=15    ?=1527=62 + ? + 7 = 15 \implies ? = 15 - 2 - 7 = 6
Answer
The number that should replace the question mark is 6.
Key Concept
Sum Consistency in Grid Patterns
Explanation
The sum of the numbers in each row and column of the grid should be consistent. By ensuring that the sum of the numbers in the bottom row matches the sum of the other rows, we determine that the missing number is 6.

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