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UKMT Junior Mathematical Challenge, 2015

Algebra Difficulty 1.0 Junior Find the answer United Kingdom

What is the value of 123451+2+3+4+5\dfrac{12345}{1+2+3+4+5}?

(A) 11 (B) 88 (C) 678678 (D) 823823 (E) 1235912359

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