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Please help me please help me​

Please help me please help me​-example-1
User Mario Nikolaus
by
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1 Answer

11 votes
11 votes

Answer:

largest 4 digit number × largest 3 digit number

=9999 × 999

(10000-1)×(1000-1) = (a-b)(c-b)= ac-ab-bc+b^2

10000000-10000-1000+1 = 9989001

User Aus
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