The square 105 is equal to

12025

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11025

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11625

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11325

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Solution

The correct option is B
11025

$(105)^{2}$ can be written as

$(100 + 5)^{2}$

$= (100)^{2} + 5^{2} + 2 (100) (5) [(x + y)^{2} = x^{2} + y^{2} + 2 x y]$

$= 10000 + 25 + 1000$

$= 11025$

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