Find 249*251 without actual multiplication
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the answer is given above plz follow
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249*251
=(250-1)*(250+1)
=(250^2)-(1^2). using (a+b)(a-b)=a^2 -b^2
=62499
=(250-1)*(250+1)
=(250^2)-(1^2). using (a+b)(a-b)=a^2 -b^2
=62499
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