Ответ:
9/8 × 10/9 × 11/10 ×12/11 × 13/12 × 14 ×13 × 15/14 ×16/15=2
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Ответ:
9/8 × 10/9 × 11/10 ×12/11 × 13/12 × 14 ×13 × 15/14 ×16/15=2