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ITMC 2018 Grade 5 National Preliminary set01 Question 27

ITMC · ITMC 2018 Grade 5 National Preliminary set01

Question 27

Answer-format rule: round a non-integer answer to the nearest integer. If the calculated answer has more than five digits, give its last five digits.

Let $d_1<d_2<\cdots<d_{15}$ be 15 different positive factors of 2500. Find $d_{12}$.