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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: (1-1/2)x(1-1/3)x(1-1/4)x(1-1/5) Giúp mình vs có 5s ạ và trl hay nhất

Toán Lớp 6: (1-1/2)x(1-1/3)x(1-1/4)x(1-1/5)
Giúp mình vs có 5s ạ và trl hay nhất

Comments ( 2 )

  1. ( 1 – 1/2 ) × ( 1 – 1/3 ) × ( 1 – 1/4 ) × ( 1 – 1/5 )
    = 1/2 × 2/3 × 3/4 × 4/5
    = {1 × 2 × 3 × 4}/{2 × 3 × 4 × 5}
    = 1/5
    #dtkc
     

  2. (1 – 1/2).(1 – 1/3).(1 – 1/4).(1 – 1/5)
    = 1/2 . 2/3 . 3/4 . 4/5
    = (1.2.3.4)/(2.3.4.5)
    = 1/5

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222-9+11+12:2*14+14 = ? ( )

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