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The missing number is 49. This is why:

1 plus 2 equals 3, then 3 squared is 9. 2 plus 3 equals 5, then 5 squared is 25. Therefore, the missing number must be 49 to make the number sentence (3 plus 4 equals 7, then 7 squared is 49) true.

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βˆ™ 2010-01-24 06:46:05
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Q: What is the missing number 1 2 9 then 2 3 25 then 3 4 blank?
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