Tìm a biết : ( 1 – 1/3 ) x ( a – 1/6 ) x ( 1 – 1/10 ) x ( 1 – 1/15 ) x….x ( 1 – 1/780 ) x a = 1

0 bình luận về “Tìm a biết : ( 1 – 1/3 ) x ( a – 1/6 ) x ( 1 – 1/10 ) x ( 1 – 1/15 ) x….x ( 1 – 1/780 ) x a = 1”

1. a=1

    

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