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

Toán Lớp 6: P = 2.4.8.16.32.64.128.256.512.1024:2⁵²

Toán Lớp 6: P = 2.4.8.16.32.64.128.256.512.1024:2⁵²

Comments ( 2 )

  1. P=2.4.8.16.32.64.128.256.512.1024:2^52
    P=2.2^2 . 2^3 . 2^4 . 2^5 . 2^6 . 2^7 . 2^8 . 2^9 . 2^10 : 2^52
    P= $2^{1+2+3+4+5+6+7+8+9+10}$ :2^52
    P=2^55 : 2^52
    P=$2^{55-52}$ 
    P=2^3
    P=8
     

  2. P = 2 . 4 . 8 . 16 . 32 . 64 . 128 . 256 . 512 . 1024 : 5^52
    P = 2 . 2^2 . 2^3 . 2^4 . 2^5 . 2^6 . 2^7 . 2^8 . 2^9 . 2^10 : 2^52
    P = 2^( 1 + 2 + 3 + …. + 9 + 10 ) : 2^52
    Đặt A = 1 + 2 + 3 + …. + 10
        A có số lượng số hạng là :
          ( 10 – 1 ) : 1 + 1 = 10 ( số )
          Giá trị của tổng A là :
           ( 10 + 1 ) . 10 : 2 = 55
    ⇒ P = 2^55 : 2^52
    P = 2^3
    P = 8
    Vậy , P = 8 .

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

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