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

Toán Lớp 5: A=1/2+1/8+1/32+1/128+…+1/8192

Toán Lớp 5: A=1/2+1/8+1/32+1/128+…+1/8192

Comments ( 1 )

  1. Giải đáp:
    [Toán lớp 5 nâng cao] – Tính tổng của các dãy phân số sau:
    a. A = 1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/64 + 1/128 + 1/256 + 1/512 + 1/1024
    b. B = 1/5 + 1/15 + 1/45 + 1/135 + 1/675 + 1/2025 + 1/6075 + 1/18225
    c. C = 1 + 1/9 + 1/81 + 1/729 + 1/6561 + 1/59049 + 1/531441
    d. D = 1/4 + 1/28 + 1/196 + 1/1372 + 1/9604 + 1/67228 + 1/470596
    xin hay nhất ạ 
     

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

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