1
Question
Find the missing number .
Find the missing number .
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Solution
The correct option is E Blank
A very obvious observation is that the outer numbers are squares. The inner numbers are quite large too.
So first step is to add the outer numbers and check.
But I would rather move to multiplication because of large numbers in the central spot. (see image)
Multiply these and you get 270.
Check the same for the next given set ; 3, 4, 8 & 7 are the square roots.
3×4×8×7=12×56=6723×4×8×7=12×56=672.
Hence,this method is perfectly correct.
For the last set, the squares roots are:
2,8,9 & 6
2×8×9×6=16×54=864
A very obvious observation is that the outer numbers are squares. The inner numbers are quite large too.
So first step is to add the outer numbers and check.
But I would rather move to multiplication because of large numbers in the central spot. (see image)
Multiply these and you get 270.
Check the same for the next given set ; 3, 4, 8 & 7 are the square roots.
3×4×8×7=12×56=6723×4×8×7=12×56=672.
Hence,this method is perfectly correct.
For the last set, the squares roots are:
2,8,9 & 6
2×8×9×6=16×54=864
So first step is to add the outer numbers and check.
But I would rather move to multiplication because of large numbers in the central spot. (see image)
Multiply these and you get 270.
Check the same for the next given set ; 3, 4, 8 & 7 are the square roots.
3×4×8×7=12×56=6723×4×8×7=12×56=672.
Hence,this method is perfectly correct.
For the last set, the squares roots are:
2,8,9 & 6
2×8×9×6=16×54=864
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