Maths Olympiad Prep

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Problem 661

AMC 10/12, early questions
Number theory Difficulty 3.0 Find the answer CEMC Gauss (Grade 8) · Canada · 1998

The number 315315 can be written as the product of two odd integers each greater than 11. In how many ways can this be done?

(A) 00 (B) 11 (C) 33 (D) 44 (E) 55

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